Science.gov

Sample records for californium 239

  1. Californium

    NASA Astrophysics Data System (ADS)

    Haire, Richard G.

    The discovery of californium came in the era of the syntheses and identifications of other transplutonium elements, following the end of World War II. The discovery of the element californium, like many of the other actinide elements, hinged on the development of new experimental techniques in conjunction with predictions based on nuclear systematics. Californium was named after the University and State of California where many of the transuranium elements were first identified. This element was discovered by Thompson, Street, Ghiorso, and Seaborg (Hyde et al., 1971; Seaborg and Loveland, 1990) in February, 1950. The discovery of californium came only 2 months after the preparation and identification of the first isotope of berkelium, element 97 (see Chapter 10). An account of the discovery and reminiscences about the early work on californium has been given by Ghiorso (1983).

  2. Historical Review of Californium-252 Discovery and Development

    DOE R&D Accomplishments Database

    Stoddard, D. H.

    1985-01-01

    This paper discusses the discovery and history of californium 252. This isotope may be synthesized by irradiating plutonium 239, plutonium 242, americium 243, or curium 244 with neutrons in a nuclear reactor. Various experiments and inventions involving Cf conducted at the Savannah River Plant are discussed. The evolution of radiotherapy using californium 252 is reviewed. (PLG)

  3. Historical review of californium-252 discovery and development

    SciTech Connect

    Stoddard, D.H.

    1985-01-01

    This paper discusses the discovery and history of californium 252. This isotope may be synthesized by irradiating plutonium 239, plutonium 242, americium 243, or curium 244 with neutrons in a nuclear reactor. Various experiments and inventions involving /sup 252/Cf conducted at the Savannah River Plant are discussed. The evolution of radiotherapy using californium 252 is reviewed. (PLG)

  4. Historical review of californium-252 discovery and development

    NASA Astrophysics Data System (ADS)

    Stoddard, D. H.

    This paper discusses the discovery and history of californium 252. This isotope may be synthesized by irradiating plutonium 239, plutonium 242, americium 243, or curium 244 with neutrons in a nuclear reactor. Various experiments and inventions involving (252)Cf conducted at the Savannah River Plant are discussed. The evolution of radiotherapy using californium 252 is reviewed.

  5. Preparation of metallic californium

    SciTech Connect

    Radchenko, V.M.; Seleznev, A.G.; Droznik, R.R.; Iebedeva, L.S.; Ryabinin, M.A.; Shushakov, V.D.; Vasil'ev, V.Ya.; Ermishev, V.T.

    1987-03-01

    A sample of metallic californium-249 with a mass of 710 ..mu..g was obtained in the form of a layer with a thickness of 2.4 +/- 0.3 ..mu..m on a quartz support. The overall yield of the vaporized metal was 84% of the starting amount of californium, and the yield of the metal on the support was 46%. It was established that metallic californium has a double hexagonal close-packed (hcp) structure of the ..cap alpha..-La type with the following parameters: a = 0.3380 +/- 0.0002, c = 1.1025 +/- 0.0002, c/2a = 1.631 +/- 0.001 nm, metallic radius 0.1689 +/- 0.0002 nm, and x-ray density 15.18 +/- 0.02 g/cm/sup 3/.

  6. Californium--palladium metal neutron source material

    DOEpatents

    Dahlen, B.L.; Mosly, W.C. Jr.; Smith, P.K.; Albenesius, E.L.

    1974-01-22

    Californium, as metal or oxide, is uniformly dispersed throughout a noble metal matrix, provided in compact, rod or wire form. A solution of californium values is added to palladium metal powder, dried, blended and pressed into a compact having a uni-form distribution of californium. The californium values are decomposed to californium oxide or metal by heating in an inert or reducing atmosphere. Sintering the compact to a high density closes the matrix around the dispersed californium. The sintered compact is then mechanically shaped into an elongated rod or wire form. (4 claims, no drawings) (Official Gazette)

  7. Californium source transfer

    SciTech Connect

    Wallace, C.R.

    1995-12-31

    In early 1995, the receipt of four sealed californium-252 sources from Oak Ridge National Lab was successfully accomplished by a team comprised of Radiological Engineering, Radiological Operations and Health Physics Instrumentation personnel. A procedure was developed and walked-down by the participants during a Dry Run Evolution. Several special tools were developed during the pre-planning phases of the project which reduced individual and job dose to minimal levels. These included a mobile lifting device for attachment of a transfer ball valve assembly to the undercarriage of the Cannonball Carrier, a transfer tube elbow to ensure proper angle of the source transfer tube, and several tools used during emergency response for remote retrieval and handling of an unshielded source. Lessons were learned in the areas of contamination control, emergency preparedness, and benefits of thorough pre-planning, effectiveness of locally creating and designing special tools to reduce worker dose, and methods of successfully accomplishing source receipt evolutions during extreme or inclement weather.

  8. Californium purification and electrodeposition

    DOE PAGES

    Burns, Jonathan D.; Van Cleve, Shelley M.; Smith, Edward Hamilton; ...

    2014-11-30

    The staff at the Radiochemical Engineering Development Center, located at Oak Ridge National Laboratory, produced a 6.3 ± 0.4 GBq (1.7 ± 0.1 Ci) 252Cf source for the Californium Rare Isotope Breeder Upgrade (CARIBU) project at Argonne National Laboratory’s Argonne Tandem Linac Accelerator System. The source was produced by electrodeposition of a 252Cf sample onto a stainless steel substrate, which required material free from excess mass for efficient deposition. The resulting deposition was the largest reported 252Cf electrodeposition source ever produced. Several different chromatographic purification methods were investigated to determine which would be most effective for final purification of themore » feed material used for the CARIBU source. The separation of lanthanides from the Cf was of special concern. Furthermore, the separation, using 145Sm, 153Gd, and 249Cf as tracers, was investigated using BioRad AG 50X8 in α-hydroxyisobutyric acid, Eichrom LN resin in both HNO3 and HCl, and Eichrom TEVA resin in NH4SCN. The TEVA NH4SCN system was found to completely separate 145Sm and 153Gd from 249Cf and was adopted into the purification process used in purifying the 252Cf.« less

  9. Californium purification and electrodeposition

    SciTech Connect

    Burns, Jonathan D.; Van Cleve, Shelley M.; Smith, Edward Hamilton; Boll, Rose Ann

    2014-11-30

    The staff at the Radiochemical Engineering Development Center, located at Oak Ridge National Laboratory, produced a 6.3 ± 0.4 GBq (1.7 ± 0.1 Ci) 252Cf source for the Californium Rare Isotope Breeder Upgrade (CARIBU) project at Argonne National Laboratory’s Argonne Tandem Linac Accelerator System. The source was produced by electrodeposition of a 252Cf sample onto a stainless steel substrate, which required material free from excess mass for efficient deposition. The resulting deposition was the largest reported 252Cf electrodeposition source ever produced. Several different chromatographic purification methods were investigated to determine which would be most effective for final purification of the feed material used for the CARIBU source. The separation of lanthanides from the Cf was of special concern. Furthermore, the separation, using 145Sm, 153Gd, and 249Cf as tracers, was investigated using BioRad AG 50X8 in α-hydroxyisobutyric acid, Eichrom LN resin in both HNO3 and HCl, and Eichrom TEVA resin in NH4SCN. The TEVA NH4SCN system was found to completely separate 145Sm and 153Gd from 249Cf and was adopted into the purification process used in purifying the 252Cf.

  10. Well Logging with Californium-252

    SciTech Connect

    Boulogne, A.R.

    2003-01-06

    Californium-252 is an intense neutron emitter that has only recently become available for experimental well logging. The purpose of this research is to investigate the application of well logging to groundwater hydrology; however, most of the techniques and purposes are quite similar to applications in the petroleum industry.

  11. Separation of Californium from other Actinides

    DOEpatents

    Mailen, J C; Ferris, L M

    1973-09-25

    A method is provided for separating californium from a fused fluoride composition containing californium and at least one element selected from the group consisting of plutonium, americium, curium, uranium, thorium, and protactinium which comprises contacting said fluoride composition with a liquid bismuth phase containing sufficient lithium or thorium to effect transfer of said actinides to the bismuth phase and then contacting the liquid bismuth phase with molten LiCl to effect selective transfer of californium to the chloride phase.

  12. Dosimetry of an Implantable 252 Californium Source

    SciTech Connect

    Oliver, G.D. Jr.

    2001-08-29

    The radiation dose from 252 Californium needles designed for use as a source of neutrons for radiotherapy has been measured. The dosimetry information presented in this paper will enable clinical studies of neutron radiotherapy with 252 Californium needles to be planned and begun.

  13. Structural investigation of californium under pressure

    NASA Astrophysics Data System (ADS)

    Heathman, S.; Le Bihan, T.; Yagoubi, S.; Johansson, B.; Ahuja, R.

    2013-06-01

    The high-pressure structural behavior of californium has been studied experimentally and theoretically up to 100 GPa. A valence change from divalent to trivalent forms was observed under modest pressure revealing californium to be the only actinide to exhibit more than one metallic valence at near to ambient conditions as is the case for cerium in the lanthanide series. Three metallic valencies and four different crystallographic phases were observed in californium as a function of pressure. High-pressure techniques, synchrotron radiation, and ab initio electronic structure calculations of total energies were used to investigate the material and to determine the role which californium's 5f electrons play in influencing these transitions. The crystallographic structures observed are similar to those found in the preceding actinide elements, curium and americium, with the initially localized 5f states becoming completely delocalized under the influence of high pressure.

  14. Californium-252 Neutron Sources for Medical Applications

    SciTech Connect

    Boulogne, A.R.

    2001-08-29

    Californium-252 neutron sources are being prepared to investigate the value of this radionuclide in diagnosing and treating diseases. A source resembling a cell-loaded radium needle was developed for neutron therapy. Since therapy needles are normally implanted in the body, very conservative design criteria were established to prevent leakage of radioactive. Methods are being developed to prepare very intense californium sources that could be used eventually for neutron radiography and for diagnosis by neutron activation analysis. This paper discusses these methods.

  15. Radiography with the Fission Neutrons from Californium-252

    DTIC Science & Technology

    1977-07-01

    iftD-Ao45 3^ m-77-B1i2i TECHNICAL 7󈧖 LIBRARY lADfto^^^ RADIOGRAPHY WITH THE FISSION NEUTRONS FROM CALIFORNIUM -252 JOHN J. ANTAL and...TITLE C«id Sub(l(/«J RADIOGRAPHY WITH THE FISSION NEUTRONS FROM CALIFORNIUM -252 5. TYPE OF REPORT it PERIOD COVERED Final Report 6...Cellulose nitrate Californium -252 20. ABSTRACT (Continue on reverse aide 11 necessary and identity by block number) (SEE REVERSE SIDE) DD 1

  16. Graphs for Isotopes of 98-Cf (Californium)

    NASA Astrophysics Data System (ADS)

    Sukhoruchkin, S. I.; Soroko, Z. N.

    This document is part of the Supplement containing the complete sets of data of Subvolume B `Nuclei with Z = 55 - 100' of Volume 22 `Nuclear Binding Energies and Atomic Masses' of Landolt-Börnstein - Group I `Elementary Particles, Nuclei and Atoms', and additionally including data for nuclei with Z = 101 - 130. It provides a graphic representation of nucleon separation energies and residual interaction parameters for isotopes of the chemical element 98-Cf (Californium, atomic number Z = 98).

  17. Californium Electrodepositions at Oak Ridge National Laboratory

    SciTech Connect

    Boll, Rose Ann

    2015-01-01

    Electrodepositions of californium isotopes were successfully performed at Oak Ridge National Laboratory (ORNL) during the past year involving two different types of deposition solutions, ammonium acetate (NH4C2H3O2) and isobutanol ((CH3)2CHCH2OH). A californium product that was decay enriched in 251Cf was recovered for use in super-heavy element (SHE) research. This neutron-rich isotope, 251Cf, provides target material for SHE research for the potential discovery of heavier isotopes of Z=118. The californium material was recovered from aged 252Cf neutron sources in storage at ORNL. These sources have decayed for over 30 years, thus providing material with a very high 251Cf-to-252Cf ratio. After the source capsules were opened, the californium was purified and then electrodeposited using the isobutanol method onto thin titanium foils for use in an accelerator at the Joint Institute for Nuclear Research in Dubna, Russia. Another deposition method, ammonium acetate, was used to produce a deposition containing 1.7 0.1 Ci of 252Cf onto a stainless steel substrate. This was the largest single electrodeposition of 252Cf ever prepared. The 252Cf material was initially purified using traditional ion exchange media, such as AG50-AHIB and AG50-HCl, and further purified using a TEVA-NH4SCN system to remove any lanthanides, resulting in the recovery of 3.6 0.1 mg of purified 252Cf. The ammonium acetate deposition was run with a current of 1.0 amp, resulting in a 91.5% deposition yield. Purification and handling of the highly radioactive californium material created additional challenges in the production of these sources.

  18. Electrodeposition of Californium Using Isobutanol and Aqueous Ammonium Acetate

    NASA Astrophysics Data System (ADS)

    Matoš, Milan; Boll, Rose A.; Phelps, Clarice E.; Torrico, Matthew N.; van Cleve, Shelley M.; Lewis, Benjamin E.

    2013-10-01

    Californium sources and targets are used in many applications in research and industry. Molecular deposition (commonly referred to as electrodeposition) is an experimental technique suitable for production of californium thin films. We are investigating molecular depositions using isobutanol and aqueous ammonium acetate solvents at various conditions to optimize for the best deposition efficiency and repeatability. Results of those tests will be presented.

  19. Investigation of the solvent extraction of californium, fermium and mendelevium.

    PubMed

    Gavrilov, K A; Gvuzdz, E; Starý, J; Seng, W T

    1966-03-01

    The extraction constants for the systems di-(2-ethylhexyl)-orthophosphoric acid/toluene/hydrochloric acid and americium, curium californium and fermium have been determined. They have been used to select the best conditions for the separation of californium, fermium and mendelevium by extraction chromatography. The separation factors are much higher than the corresponding ion-exchange methods.

  20. Californium-252: a remarkable versatile radioisotope

    SciTech Connect

    Osborne-Lee, I.W.; Alexander, C.W.

    1995-10-10

    A product of the nuclear age, Californium-252 ({sup 252}Cf) has found many applications in medicine, scientific research, industry, and nuclear science education. Californium-252 is unique as a neutron source in that it provides a highly concentrated flux and extremely reliable neutron spectrum from a very small assembly. During the past 40 years, {sup 252}Cf has been applied with great success to cancer therapy, neutron radiography of objects ranging from flowers to entire aircraft, startup sources for nuclear reactors, fission activation for quality analysis of all commercial nuclear fuel, and many other beneficial uses, some of which are now ready for further growth. Californium-252 is produced in the High Flux Isotope Reactor (HFIR) and processed in the Radiochemical Engineering Development Center (REDC), both of which are located at the Oak Ridge National Laboratory (ORNL) in Oak Ridge, Tennessee. The REDC/HFIR facility is virtually the sole supplier of {sup 252}Cf in the western world and is the major supplier worldwide. Extensive exploitation of this product was made possible through the {sup 252}Cf Market Evaluation Program, sponsored by the United States Department of Energy (DOE) [then the Atomic Energy Commission (AEC) and later the Energy Research and Development Administration (ERDA)]. This program included training series, demonstration centers, seminars, and a liberal loan policy for fabricated sources. The Market Evaluation Program was instituted, in part, to determine if large-quantity production capability was required at the Savannah River Laboratory (SRL). Because of the nature of the product and the means by which it is produced, {sup 252}Cf can be produced only in government-owned facilities. It is evident at this time that the Oak Ridge research facility can meet present and projected near-term requirements. The production, shipment, and sales history of {sup 252}Cf from ORNL is summarized herein.

  1. Radiation Protection for Safe Handling of Californium 252 Sources

    SciTech Connect

    Wright, C.N.

    2001-08-29

    Californium-252 may be used extensively as a new source of neutrons in the next few years. Because of the high emission rate from spontaneous fission, californium can be fabricated into useful sources that are physically small - one of its major attractions. The first sources were fabricated in the configuration of radium therapy needles. Because the users of these sources may be radiologists and medical personnel unfamiliar with neutron hazards, some of the characteristics of Californium 252 sources are reviewed from a health physics viewpoint in this paper.

  2. Method for fabricating thin californium-containing radioactive source wires

    DOEpatents

    Gross, Ian G; Pierce, Larry A

    2006-08-22

    A method for reducing the cross-sectional diameter of a radioactive californium-containing cermet wire while simultaneously improving the wire diameter to a more nearly circular cross section. A collet fixture is used to reduce the wire diameter by controlled pressurization pulses while simultaneously improving the wire cross-sectional diameter. The method is especially suitable for use in hot cells for the production of optimized cermet brachytherapy sources that contain large amounts of radioactive californium-252.

  3. Development of Californium-252 Miniature Source Assemblies

    SciTech Connect

    Notspecified, N. A.

    2007-06-26

    The purpose of this CRADA between ORNL and lsotron, Inc. is to develop miniature californium-252 sources configured for remote handling that can be used in neutron brachytherapy for treatment of cancer. Brachytherapy places the · radioactive source at or near the site of the tumor, using a catheter. The CRADA ran from late 1999 through November 2005. The heart of a Cf-252 source is the radioactive core wire, which is sealed inside a metallic source capsule. Previous Cf-252 medical sources were based on a cermet wire with californium oxide dispersed in palladium, typically >1-mm diameter and <0.1% Cf-252 by weight. Previously, the standard medical source in the U.S. was the Applicator Tube (AT) source. 23-mm long, 2.8-mm diameter, with ~30 {micro}g of Cf-252, and which required manual loading into patients by medical staff. The goal of this work was to develop capabilities and technology to fabricate higher-intensity Cf-252 sources attached to a positioning cable, with overall diameter approaching that of exist ing photon (iridium-192) brachytherapy sources (i.e., ~1.1 mm). This work was successful in developing and demonstrating new technologies and procedures for the fabrication of miniaturized Cf-252 sources. CRADA-designed equipment reduced the wire diameters significantly (patent pending). Short wire segments were cut and successfully welded inside capsules meeting the miniaturization goals. A batch of seven prototype sources was prepared that met fabrication specifications. Although their neutron emissions were not maximized, they were still several times more intense than the previous AT sources. Very robust source-to-cable attachment methods were demonstrated (patent issued). A shipping canister was designed and built to contain the completed source assembly. lsotron designed and built a computer-controlled remote afterloader system to deliver the new sources for treatments.

  4. Calibration of a Modified Californium Shuffler

    SciTech Connect

    Sadowski, E.T.; Armstrong, F.; Oldham, R.; Ceo, R.; Williams, N.

    1995-06-01

    A californium shuffler originally designed to assay hollow cylindrical pieces of UA1 has been modified to assay solid cylinders. Calibration standards were characterized via chemical analysis of the molten UA1 taken during casting of the standards. The melt samples yielded much more reliable characterization data than drill samples taken from standards after the standards had solidified. By normalizing one well-characterized calibration curve to several standards at different enrichments, a relatively small number of standards was required to develop an enrichment-dependent calibration. The precision of this shuffler is 0.65%, and the typical random and systematic uncertainties are 0.53% and 0.73%, respectively, for a six minute assay of an ingot containing approximately 700 grams of {sup 235}U. This paper will discuss (1) the discrepancies encountered when UA1 standards were characterized via melt samples versus drill samples, (2) a calibration methodology employing a small number of standards, and (3) a comparison of results from a previously unused shuffler with an existing shuffler. A small number of UA1 standards have been characterized using samples from the homogeneous molten state and have yielded enrichment-dependent and enrichment-independent calibration curves on two different shufflers.

  5. Californium-252 encapsulation at the Savannah River Laboratory

    SciTech Connect

    Boulogne, A.R.

    1980-01-01

    More than 1 g of the neutron-emitting isotope californium-252 has been encapsulated at SRL for worldwide medical, industrial, and research uses. Bulk sales packages have been prepared for the USDOE sales program since 1971. Doubly-encapsulated sources have been prepared for USDOE's market evaluation program since 1968. Californium-252 sources for loan and sales packages satisfy the criteria for Special Form Radioactive Material. Encapsulation is performed in special neutron-shielded containment facilities at SRL. Development of improved source and shipping package designs and processes is continuing. 17 figures.

  6. Biologically effective doses from californium-252 intracavitary applications.

    PubMed

    Iyer, P S

    1975-02-01

    Californium-252 which emits fission neutrons and gamma rays is being investigated for applications in brachytherapy. From available experimental results, a value of 6.2 had been arrived at as the RBE for cell killing of californium neutrons relative to radium gavva rays for intracavitary applications based on the revised Manchester system of loading. The LET distributions as well as the ratio of neutron to gamma dose-rates have been estimated and are found to remain almost constant in the volume of interest around such applications.

  7. Californium Multiplier Part I: design for neutron radiography

    SciTech Connect

    Crosbie, K.L.; Preskitt, C.A.; John, J.; Hastings, J.D.

    1982-01-01

    The Californium Multiplier (CFX) is a subcritical assembly of enriched uranium surrounding a californium-252 neutron source. The function of the CFX is to multiply the neutrons emitted by the source to a number sufficient for neutron radiography. The CFX is designed to provide a collimated beam of thermal neutrons from which the gamma radiation is filtered, and the scattered neutrons are reduced to make it suitable for high resolution radiography. The entire system has inherent safety features, which provide for system and personnel safety, and it operates at moderate cost. In Part I, the CFX and the theory of its operation are described in detail.

  8. Californium-252: A New Isotopic Source for Neutron Radiography

    SciTech Connect

    Reinig, W.C.

    2001-08-29

    This report discusses a new isotopic source for neutron radiography, Californium-252. Nuclear reactors are the usual source of neutrons for radiography, primarily because of their intense neutron beams. If neutron radiography is to have widespread use, intense transportable neutron sources are required that can be used in plants, in laboratories and in the field.

  9. A Californium-252 Neutron Source for Student Use

    ERIC Educational Resources Information Center

    Bowen, H. J.

    1975-01-01

    Describes an undergraduate chemistry experiment which utilizes small samples of Californium 252 as a neutron source for the activation of 12 other elements. The students prepare decay curves of the radioactive isotopes and perform nondestructive activation analyses for gram amounts of some elements. (MLH)

  10. A Californium-252 Neutron Source for Student Use

    ERIC Educational Resources Information Center

    Bowen, H. J.

    1975-01-01

    Describes an undergraduate chemistry experiment which utilizes small samples of Californium 252 as a neutron source for the activation of 12 other elements. The students prepare decay curves of the radioactive isotopes and perform nondestructive activation analyses for gram amounts of some elements. (MLH)

  11. A summary of SEU test results using californium-252

    SciTech Connect

    Sorensen, R.H.; Adams, L.; Sanderson, T.K.

    1988-12-01

    This paper presents a summary of four years Single Event Upset (SEU) test results on a wide range of devices and technologies using Californium-252 having an average Linear Energy Transfer (LET) = 43 MeV/(mg/sqcm). Sensitivity variations are highlighted, particularly for nominally identical devices. The significance of the testing and test data with respect to recent devices and technologies is discussed.

  12. Californium Multiplier. Part I. Design for neutron radiography

    SciTech Connect

    Crosbie, K.L.; Preskitt, C.A.; John, J.; Hastings, J.D.

    1982-04-01

    The Californium Multiplier (CFX) is a subcritical assembly of enriched uranium surrounding a californium-252 neutron source. The function of the CFX is to multiply the neutrons emitted by the source to a number sufficient for neutron radiography. The CFX is designed to provide a collimated beam of thermal neutrons from which the gamma radiation is filtered, and the scattered neutrons are reduced to make it suitable for high resolution radiography. The entire system has inherent safety features, which provide for system and personnel safety, and it operates at moderate cost. In Part I, the CFX and the theory of its operation are described in detail. Part II covers the performance of the Mound Facility CFX.

  13. Production, distribution and applications of californium-252 neutron sources.

    PubMed

    Martin, R C; Knauer, J B; Balo, P A

    2000-01-01

    The radioisotope 252Cf is routinely encapsulated into compact, portable, intense neutron sources with a 2.6-yr half-life. A source the size of a person's little finger can emit up to 10(11) neutrons s(-1). Californium-252 is used commercially as a reliable, cost-effective neutron source for prompt gamma neutron activation analysis (PGNAA) of coal, cement and minerals, as well as for detection and identification of explosives, land mines and unexploded military ordinance. Other uses are neutron radiography, nuclear waste assays, reactor start-up sources, calibration standards and cancer therapy. The inherent safety of source encapsulations is demonstrated by 30 yr of experience and by US Bureau of Mines tests of source survivability during explosions. The production and distribution center for the US Department of Energy (DOE) Californium Program is the Radiochemical Engineering Development Center (REDC) at Oak Ridge National Laboratory (ORNL). DOE sells 252Cf to commercial reencapsulators domestically and internationally. Sealed 252Cf sources are also available for loan to agencies and subcontractors of the US government and to universities for educational, research and medical applications. The REDC has established the Californium User Facility (CUF) for Neutron Science to make its large inventory of 252Cf sources available to researchers for irradiations inside uncontaminated hot cells. Experiments at the CUF include a land mine detection system, neutron damage testing of solid-state detectors, irradiation of human cancer cells for boron neutron capture therapy experiments and irradiation of rice to induce genetic mutations.

  14. 48 CFR 239.7403-239.7404 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false 239.7403-239.7404 Section 239.7403-239.7404 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  15. 48 CFR 239.7403-239.7404 - [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false 239.7403-239.7404 Section 239.7403-239.7404 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  16. 48 CFR 239.7403-239.7404 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false 239.7403-239.7404 Section 239.7403-239.7404 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  17. 48 CFR 239.7403-239.7404 - [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false 239.7403-239.7404 Section 239.7403-239.7404 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  18. 48 CFR 239.7403-239.7404 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false 239.7403-239.7404 Section 239.7403-239.7404 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  19. Production, Distribution, and Applications of Californium-252 Neutron Sources

    SciTech Connect

    Balo, P.A.; Knauer, J.B.; Martin, R.C.

    1999-10-03

    The radioisotope {sup 252}Cf is routinely encapsulated into compact, portable, intense neutron sources with a 2.6-year half-life. A source the size of a person's little finger can emit up to 10{sup 11} neutrons/s. Californium-252 is used commercially as a reliable, cost-effective neutron source for prompt gamma neutron activation analysis (PGNAA) of coal, cement, and minerals, as well as for detection and identification of explosives, laud mines, and unexploded military ordnance. Other uses are neutron radiography, nuclear waste assays, reactor start-up sources, calibration standards, and cancer therapy. The inherent safety of source encapsulations is demonstrated by 30 years of experience and by U.S. Bureau of Mines tests of source survivability during explosions. The production and distribution center for the U. S Department of Energy (DOE) Californium Program is the Radiochemical Engineering Development Center (REDC) at Oak Ridge National Laboratory (ORNL). DOE sells The radioisotope {sup 252}Cf is routinely encapsulated into compact, portable, intense neutron sources with a 2.6- year half-life. A source the size of a person's little finger can emit up to 10 neutrons/s. Californium-252 is used commercially as a reliable, cost-effective neutron source for prompt gamma neutron activation analysis (PGNAA) of coal, cement, and minerals, as well as for detection and identification of explosives, laud mines, and unexploded military ordnance. Other uses are neutron radiography, nuclear waste assays, reactor start-up sources, calibration standards, and cancer therapy. The inherent safety of source encapsulations is demonstrated by 30 years of experience and by U.S. Bureau of Mines tests of source survivability during explosions. The production and distribution center for the U. S Department of Energy (DOE) Californium Program is the Radiochemical Engineering Development Center (REDC) at Oak Ridge National Laboratory(ORNL). DOE sells {sup 252}Cf to commercial

  20. Atomic Mass and Nuclear Binding Energy for Cf-327 (Californium)

    NASA Astrophysics Data System (ADS)

    Sukhoruchkin, S. I.; Soroko, Z. N.

    This document is part of the Supplement containing the complete sets of data of Subvolume B `Nuclei with Z = 55 - 100' of Volume 22 `Nuclear Binding Energies and Atomic Masses' of Landolt-Börnstein - Group I `Elementary Particles, Nuclei and Atoms', and additionally including data for nuclei with Z = 101 - 130. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Cf-327 (Californium, atomic number Z = 98, mass number A = 327).

  1. Atomic Mass and Nuclear Binding Energy for Cf-326 (Californium)

    NASA Astrophysics Data System (ADS)

    Sukhoruchkin, S. I.; Soroko, Z. N.

    This document is part of the Supplement containing the complete sets of data of Subvolume B `Nuclei with Z = 55 - 100' of Volume 22 `Nuclear Binding Energies and Atomic Masses' of Landolt-Börnstein - Group I `Elementary Particles, Nuclei and Atoms', and additionally including data for nuclei with Z = 101 - 130. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Cf-326 (Californium, atomic number Z = 98, mass number A = 326).

  2. Atomic Mass and Nuclear Binding Energy for Cf-330 (Californium)

    NASA Astrophysics Data System (ADS)

    Sukhoruchkin, S. I.; Soroko, Z. N.

    This document is part of the Supplement containing the complete sets of data of Subvolume B `Nuclei with Z = 55 - 100' of Volume 22 `Nuclear Binding Energies and Atomic Masses' of Landolt-Börnstein - Group I `Elementary Particles, Nuclei and Atoms', and additionally including data for nuclei with Z = 101 - 130. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Cf-330 (Californium, atomic number Z = 98, mass number A = 330).

  3. Atomic Mass and Nuclear Binding Energy for Cf-329 (Californium)

    NASA Astrophysics Data System (ADS)

    Sukhoruchkin, S. I.; Soroko, Z. N.

    This document is part of the Supplement containing the complete sets of data of Subvolume B `Nuclei with Z = 55 - 100' of Volume 22 `Nuclear Binding Energies and Atomic Masses' of Landolt-Börnstein - Group I `Elementary Particles, Nuclei and Atoms', and additionally including data for nuclei with Z = 101 - 130. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Cf-329 (Californium, atomic number Z = 98, mass number A = 329).

  4. Atomic Mass and Nuclear Binding Energy for Cf-328 (Californium)

    NASA Astrophysics Data System (ADS)

    Sukhoruchkin, S. I.; Soroko, Z. N.

    This document is part of the Supplement containing the complete sets of data of Subvolume B `Nuclei with Z = 55 - 100' of Volume 22 `Nuclear Binding Energies and Atomic Masses' of Landolt-Börnstein - Group I `Elementary Particles, Nuclei and Atoms', and additionally including data for nuclei with Z = 101 - 130. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Cf-328 (Californium, atomic number Z = 98, mass number A = 328).

  5. Preliminary observations on californium-252 behaviour in sea water, sediments and zooplankton.

    PubMed

    Aston, S R; Fowler, S W

    1983-04-01

    We carried out radiotracer experiments on the behaviour of 252Cf in the marine environment. The particulate fraction of californium in sea water approached 45% after four days. Californium rapidly adsorbed onto marine coastal and deep-sea sediments with Kd values from 1.4 X 10(4) to greater than or equal to 1 X 10(5). The concentration of 252Cf in euphausiids reached near-equilibrium factors of 3 X 10(2) in water after one week; in contrast, the assimilation from food was very low. Excreted fecal pellets, molts and zooplankton carcasses are potentially important vectors for californium re-distribution in the oceans.

  6. Potentially-lethal damage and radioprotection in human cells exposed to californium-252

    SciTech Connect

    Schroy, C.B.; Goud, S.N.; Magura, C.; Feola, J.M.; Maruyama, Y.

    1986-01-01

    Cultured human T-1E cells were irradiated with californium-252 neutrons and gamma rays. When 2 mm caffeine was present in the medium for 47 h after irradiation cell survival (assayed by colony formation) was decreased significantly. When 2 m dimethylsulfoxide was present during the irradiations radioprotection was observed using the same assay. The caffeine data indicate that potentially-lethal lesions exist in cells after californium exposure and that these lesions can be made lethal when they would otherwise be repaired. The DMSO data indicate that radioprotection from californium exposure can be achieved and that scanvengable free radicals play an important role in Cf-252 lethality.

  7. Radioactive beams from Californium fission at the CARIBU facility

    NASA Astrophysics Data System (ADS)

    Savard, Guy; Pardo, Richard; Baker, Sam; Davids, Cary; Peterson, Don; Phillips, Don; Vondrasek, Rick; Zabransky, Bruce; Zinkann, Gary

    2009-10-01

    The Californium Rare Ion Breeder Upgrade (CARIBU) of the ATLAS superconducting linac facility aims at providing low energy and reaccelerated neutron-rich radioactive beams to address key nuclear physics and astrophysics questions. These beams are obtained from fission fragments of a 1 Ci ^252Cf source, thermalized and collected into a low-energy particle beam by a helium gas catcher, mass analyzed by an isobar separator, and charge breed to higher charge states for acceleration in ATLAS. The method described is fast and universal and short-lived isotope yield scale essentially with Californium fission yields. Expected intensities of reaccelerated beams are up to ˜5x10^5 (10^7 at low energy) far-from-stability ions per second on target. Initial commissioning is being performed with weaker 2.5 and 80 mCi sources. Commissioning results, together with the nuclear physics and astrophysics program that will be pursued with the neutron-rich beams made available, will be presented. Plans for installation of the 1 Ci source will be discussed.

  8. Plutonium 239 Equivalency Calculations

    SciTech Connect

    Wen, J

    2011-05-31

    This document provides the basis for converting actual weapons grade plutonium mass to a plutonium equivalency (PuE) mass of Plutonium 239. The conversion can be accomplished by performing calculations utilizing either: (1) Isotopic conversions factors (CF{sub isotope}), or (2) 30-year-old weapons grade conversion factor (CF{sub 30 yr}) Both of these methods are provided in this document. Material mass and isotopic data are needed to calculate PuE using the isotopic conversion factors, which will provide the actual PuE value at the time of calculation. PuE is the summation of the isotopic masses times their associated isotopic conversion factors for plutonium 239. Isotopic conversion factors are calculated by a normalized equation, relative to Plutonium 239, of specific activity (SA) and cumulated dose inhalation affects based on 50-yr committed effective dose equivalent (CEDE). The isotopic conversion factors for converting weapons grade plutonium to PuE are provided in Table-1. The unit for specific activity (SA) is curies per gram (Ci/g) and the isotopic SA values come from reference [1]. The cumulated dose inhalation effect values in units of rem/Ci are based on 50-yr committed effective dose equivalent (CEDE). A person irradiated by gamma radiation outside the body will receive a dose only during the period of irradiation. However, following an intake by inhalation, some radionuclides persist in the body and irradiate the various tissues for many years. There are three groups CEDE data representing lengths of time of 0.5 (D), 50 (W) and 500 (Y) days, which are in reference [2]. The CEDE values in the (W) group demonstrates the highest dose equivalent value; therefore they are used for the calculation.

  9. Unusual structure, bonding and properties in a californium borate.

    PubMed

    Polinski, Matthew J; Garner, Edward B; Maurice, Rémi; Planas, Nora; Stritzinger, Jared T; Parker, T Gannon; Cross, Justin N; Green, Thomas D; Alekseev, Evgeny V; Van Cleve, Shelley M; Depmeier, Wulf; Gagliardi, Laura; Shatruk, Michael; Knappenberger, Kenneth L; Liu, Guokui; Skanthakumar, S; Soderholm, Lynda; Dixon, David A; Albrecht-Schmitt, Thomas E

    2014-05-01

    The participation of the valence orbitals of actinides in bonding has been debated for decades. Recent experimental and computational investigations demonstrated the involvement of 6p, 6d and/or 5f orbitals in bonding. However, structural and spectroscopic data, as well as theory, indicate a decrease in covalency across the actinide series, and the evidence points to highly ionic, lanthanide-like bonding for late actinides. Here we show that chemical differentiation between californium and lanthanides can be achieved by using ligands that are both highly polarizable and substantially rearrange on complexation. A ligand that suits both of these desired properties is polyborate. We demonstrate that the 5f, 6d and 7p orbitals are all involved in bonding in a Cf(III) borate, and that large crystal-field effects are present. Synthetic, structural and spectroscopic data are complemented by quantum mechanical calculations to support these observations.

  10. Unusual structure, bonding and properties in a californium borate

    NASA Astrophysics Data System (ADS)

    Polinski, Matthew J.; Garner, Edward B.; Maurice, Rémi; Planas, Nora; Stritzinger, Jared T.; Parker, T. Gannon; Cross, Justin N.; Green, Thomas D.; Alekseev, Evgeny V.; van Cleve, Shelley M.; Depmeier, Wulf; Gagliardi, Laura; Shatruk, Michael; Knappenberger, Kenneth L.; Liu, Guokui; Skanthakumar, S.; Soderholm, Lynda; Dixon, David A.; Albrecht-Schmitt, Thomas E.

    2014-05-01

    The participation of the valence orbitals of actinides in bonding has been debated for decades. Recent experimental and computational investigations demonstrated the involvement of 6p, 6d and/or 5f orbitals in bonding. However, structural and spectroscopic data, as well as theory, indicate a decrease in covalency across the actinide series, and the evidence points to highly ionic, lanthanide-like bonding for late actinides. Here we show that chemical differentiation between californium and lanthanides can be achieved by using ligands that are both highly polarizable and substantially rearrange on complexation. A ligand that suits both of these desired properties is polyborate. We demonstrate that the 5f, 6d and 7p orbitals are all involved in bonding in a Cf(III) borate, and that large crystal-field effects are present. Synthetic, structural and spectroscopic data are complemented by quantum mechanical calculations to support these observations.

  11. Metastable charge-transfer state of californium(iii) compounds.

    PubMed

    Liu, Guokui; Cary, Samantha K; Albrecht-Schmitt, Thomas E

    2015-06-28

    Among a series of anomalous physical and chemical properties of Cf(iii) compounds revealed by recent investigations, the present work addresses the characteristics of the optical spectra of An(HDPA)3·H2O (An = Am, Cm, and Cf), especially the broadband photoluminescence from Cf(HDPA)3·H2O induced by ligand-to-metal charge transfer (CT). As a result of strong ion-ligand interactions and the relative ease of reducing Cf(iii) to Cf(ii), a CT transition occurs at low energy (<3 eV) via the formation of a metastable Cf(ii) state. It is shown that the systematic trend in CT transitions of the lanthanide series is not paralleled by actinide elements lighter than Cf(iii), and californium represents a turning point in the periodicity of the actinide series. Analyses and modeling of the temperature-dependent luminescence dynamics indicate that the metastable Cf(ii) charge-transfer state undergoes radiative and non-radiative relaxations. Broadening of the CT transition arises from strong vibronic coupling and hole-charge interactions in the valence band. The non-radiative relaxation of the metastable CT state results from a competition between phonon-relaxation and thermal tunneling that populates the excited states of Cf(iii).

  12. Teratogenic effect of californium-252 irradiation in rats.

    PubMed

    Satow, Y; Lee, J Y; Hori, H; Okuda, H; Tsuchimoto, S; Sawada, S; Yokoro, K

    1989-06-01

    The teratogenicity of californium-252 (Cf-252) irradiation which generates approximately 70% 2.3 MeV fast neutron and 30% gamma rays was evaluated. A single whole body exposure of Cf-252 at various doses was given to pregnant rats on day 8 or 9 of pregnancy, followed by microscopic autopsy of the fetuses at the terminal stage of pregnancy to search for external and internal malformations. For comparison, pregnant rats were irradiated with various doses of cobalt-60 (Co-60) standard gamma rays at the same dose rate (1 rad/min.). The doses were 20-120 rad of Cf-252 and 80-220 rad of Co-60. Using frequency of radiation induced malformations observed on day 8 of pregnancy as an index, relative biological effectiveness (RBE) of 2.3-2.7 was obtained from the straight line obtained by modifying by the least squares method the frequency curves of malformed fetuses in total implants and in surviving fetuses. The types of malformations induced by Cf-252 and Co-60 irradiation were alike. Using fetal LD50 as an index, 2.4 was obtained as RBE when irradiated on day 8 of pregnancy and 3.1 as that when irradiated on day 9. The results showed that Cf-252 had stronger a teratogenic effect than Co-60 gamma rays.

  13. Emergence of californium as the second transitional element in the actinide series

    SciTech Connect

    Cary, Samantha K.; Vasiliu, Monica; Baumbach, Ryan E.; Stritzinger, Jared T.; Green, Thomas D.; Diefenbach, Kariem; Cross, Justin N.; Knappenberger, Kenneth L.; Liu, Guokui; Silver, Mark A.; DePrince, A. Eugene; Polinski, Matthew J.; Van Cleve, Shelley M.; House, Jane H.; Kikugawa, Naoki; Gallagher, Andrew; Arico, Alexandra A.; Dixon, David A.; Albrecht-Schmitt, Thomas E.

    2015-04-16

    A break in periodicity occurs in the actinide series between plutonium and americium as the result of the localization of 5f electrons. The subsequent chemistry of later actinides is thought to closely parallel lanthanides in that bonding is expected to be ionic and complexation should not substantially alter the electronic structure of the metal ions. Here we demonstrate that ligation of californium(III) by a pyridine derivative results in significant deviations in the properties of the resultant complex with respect to that predicted for the free ion. We expand on this by characterizing the americium and curium analogues for comparison, and show that these pronounced effects result from a second transition in periodicity in the actinide series that occurs, in part, because of the stabilization of the divalent oxidation state. As a result, the metastability of californium(II) is responsible for many of the unusual properties of californium including the green photoluminescence.

  14. Emergence of californium as the second transitional element in the actinide series.

    PubMed

    Cary, Samantha K; Vasiliu, Monica; Baumbach, Ryan E; Stritzinger, Jared T; Green, Thomas D; Diefenbach, Kariem; Cross, Justin N; Knappenberger, Kenneth L; Liu, Guokui; Silver, Mark A; DePrince, A Eugene; Polinski, Matthew J; Van Cleve, Shelley M; House, Jane H; Kikugawa, Naoki; Gallagher, Andrew; Arico, Alexandra A; Dixon, David A; Albrecht-Schmitt, Thomas E

    2015-04-16

    A break in periodicity occurs in the actinide series between plutonium and americium as the result of the localization of 5f electrons. The subsequent chemistry of later actinides is thought to closely parallel lanthanides in that bonding is expected to be ionic and complexation should not substantially alter the electronic structure of the metal ions. Here we demonstrate that ligation of californium(III) by a pyridine derivative results in significant deviations in the properties of the resultant complex with respect to that predicted for the free ion. We expand on this by characterizing the americium and curium analogues for comparison, and show that these pronounced effects result from a second transition in periodicity in the actinide series that occurs, in part, because of the stabilization of the divalent oxidation state. The metastability of californium(II) is responsible for many of the unusual properties of californium including the green photoluminescence.

  15. Emergence of californium as the second transitional element in the actinide series

    DOE PAGES

    Cary, Samantha K.; Vasiliu, Monica; Baumbach, Ryan E.; ...

    2015-04-16

    A break in periodicity occurs in the actinide series between plutonium and americium as the result of the localization of 5f electrons. The subsequent chemistry of later actinides is thought to closely parallel lanthanides in that bonding is expected to be ionic and complexation should not substantially alter the electronic structure of the metal ions. Here we demonstrate that ligation of californium(III) by a pyridine derivative results in significant deviations in the properties of the resultant complex with respect to that predicted for the free ion. We expand on this by characterizing the americium and curium analogues for comparison, andmore » show that these pronounced effects result from a second transition in periodicity in the actinide series that occurs, in part, because of the stabilization of the divalent oxidation state. As a result, the metastability of californium(II) is responsible for many of the unusual properties of californium including the green photoluminescence.« less

  16. Biomedical neutron research at the Californium User Facility for neutron science

    SciTech Connect

    Martin, R.C.; Byrne, T.E.; Miller, L.F.

    1997-04-01

    The Californium User Facility for Neutron Science has been established at Oak Ridge National Laboratory (ORNL). The Californium User Facility (CUF) is a part of the larger Californium Facility, which fabricates and stores compact {sup 252}Cf neutron sources for worldwide distribution. The CUF can provide a cost-effective option for research with {sup 252}Cf sources. Three projects at the CUF that demonstrate the versatility of {sup 252}Cf for biological and biomedical neutron-based research are described: future establishment of a {sup 252}Cf-based neutron activation analysis system, ongoing work to produce miniature high-intensity, remotely afterloaded {sup 252}Cf sources for tumor therapy, and a recent experiment that irradiated living human lung cancer cells impregnated with experimental boron compounds to test their effectiveness for boron neutron capture therapy.

  17. Proposed Californium-252 User Facility for Neutron Science at Oak Ridge National Laboratory

    SciTech Connect

    Martin, R.C.; Laxson, R.R.; Knauer, J.B.

    1996-10-01

    The Radiochemical Engineering Development Center (REDC) at ORNL has petitioned to establish a Californium-252 User Facility for Neutron Science for academic, industrial, and governmental researchers. The REDC Californium Facility (CF) stores the national inventory of sealed {sup 252}Cf neutron source for university and research loans. Within the CF, the {sup 252}Cf storage pool and two uncontaminated hot cells currently in service for the Californium Program will form the physical basis for the User Facility. Relevant applications include dosimetry and experiments for neutron tumor therapy; fast and thermal neutron activation analysis of materials; experimental configurations for prompt gamma neutron activation analysis; neutron shielding and material damage studies; and hardness testing of radiation detectors, cameras, and electronics. A formal User Facility simplifies working arrangements and agreements between US DOE facilities, academia, and commercial interests.

  18. Emergence of californium as the second transitional element in the actinide series

    PubMed Central

    Cary, Samantha K.; Vasiliu, Monica; Baumbach, Ryan E.; Stritzinger, Jared T.; Green, Thomas D.; Diefenbach, Kariem; Cross, Justin N.; Knappenberger, Kenneth L.; Liu, Guokui; Silver, Mark A.; DePrince, A. Eugene; Polinski, Matthew J.; Van Cleve, Shelley M.; House, Jane H.; Kikugawa, Naoki; Gallagher, Andrew; Arico, Alexandra A.; Dixon, David A.; Albrecht-Schmitt, Thomas E.

    2015-01-01

    A break in periodicity occurs in the actinide series between plutonium and americium as the result of the localization of 5f electrons. The subsequent chemistry of later actinides is thought to closely parallel lanthanides in that bonding is expected to be ionic and complexation should not substantially alter the electronic structure of the metal ions. Here we demonstrate that ligation of californium(III) by a pyridine derivative results in significant deviations in the properties of the resultant complex with respect to that predicted for the free ion. We expand on this by characterizing the americium and curium analogues for comparison, and show that these pronounced effects result from a second transition in periodicity in the actinide series that occurs, in part, because of the stabilization of the divalent oxidation state. The metastability of californium(II) is responsible for many of the unusual properties of californium including the green photoluminescence. PMID:25880116

  19. 48 CFR 239.7408 - Special construction.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Special construction. 239.7408 Section 239.7408 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM... Telecommunications Services 239.7408 Special construction. ...

  20. 48 CFR 239.7408 - Special construction.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Special construction. 239.7408 Section 239.7408 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM... Telecommunications Services 239.7408 Special construction. ...

  1. 48 CFR 239.7408 - Special construction.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Special construction. 239.7408 Section 239.7408 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM... Telecommunications Services 239.7408 Special construction. ...

  2. A review of californium-252 neutron brachytherapy for cervical cancer

    SciTech Connect

    Maruyama, Y.; van Nagell, J.R.; Yoneda, J.; Donaldson, E.S.; Gallion, H.H.; Powell, D.; Kryscio, R.J. )

    1991-09-15

    Since 1976 a clinical trial has been conducted to test the feasibility, the potential, and to develop methods for using the neutron-emitting radioactive isotope, californium-252 (Cf-252), for the treatment of cervical cancer. A total of 218 patients were treated in the initial study period from 1976 until 1983. The trials initially treated advanced cervical cancer patients using different doses and schedules; they were extended to include unfavorable presentations of Stages 1 and 2 because of favorable results in the initial trials. The authors began to treat patients with Stage IB bulky or barrel-shaped tumors and the majority were treated with both radiation and hysterectomy. Actuarial survival was determined for Stage IB disease and was 87% at 5 years and 82% at 10 years. For those tested with preoperative radiation it was 92% at 5 and 87% at 10 years. For Stage 2, it was 62% 5 years and 61% at 10. Survival 5 years after combined radiation and surgical therapy for Stage 2 disease was 68%. For Stage 3, it was 33% at 5 years and 25% at 10. However, 5-year survival using the early neutron implant was 46% versus approximately 19% for delayed Cf-252 or cesium 137. Different schedules and sequences of neutrons and photons greatly altered outcome. Neutron treatment before external photon therapy was better for all stages of disease. Only about 5% of all patients developed complications after neutron therapy. No hematologic or mesenchymal second tumors were observed. Neutron brachytherapy was found to be very effective for producing rapid response and greatly improved local control of bulky, barrel, or advanced cervical cancers. The clinical trial identified and evolved schedules, doses, doses per session, and developed methods different from standard photon therapy but highly effective for local control and cure of cervical cancers of all stages.

  3. Remote afterloading for neutron brachytherapy using californium-252.

    PubMed

    Tacev, Taco; Grigorov, Grigor; Papírek, Tomás; Kolarík, Vladimír

    2003-02-01

    Despite a pronounced technical process attained in radiotherapy of malignant neoplasms, no remarkable improvement in the treatment results has been achieved. The reason for this stagnation is the interaction between tumor cell and photon radiation. Tumor resistance against photon bombardment can be broken down by applying high linear energy transfer (LET) radiation-based treatment. The discovery of californium-252 ((252)Cf) nuclide, a source of gamma neutron radiation, established a precondition for using neutrons in tumor brachytherapy. The design of a remote afterloading device using (252)Cf sources remains an unsolved problem. The afterloading device has been designed as a stationary radiator which is composed of three mutually interconnected units: 1. the control and drive unit consisting of a control computer and a motor-driven bowden system carrying the (252)Cf source; 2. the source which is housed in a watertight concrete vessel-storage strong room, situated in the ground at a depth of 25 cm beneath the patient's bed; 3. the afterloading application module installed in the irradiation room. Remote afterloading allows simple, inexpensive and highly efficient radiation protection and work safety for the operating personnel. The sources may be moved arbitrarily during treatment with a position accuracy of 0.5-1.0 mm within a distance of 520 cm from the source storage position in the strong room to the application position. Both afterloading systems' unused indexer outputs are protected electronically and mechanically against any unintentional movement of the source outside the application tubes. The technologic concept of the present automatic afterloading device for neutron brachytherapy represents a possible option from the range of conceivable design variants, which - while minimizing technologic and economic requirements - provides the operating personnel with optimum protection and work safety, thus extending the applicability of high LET radiation

  4. Three-cluster model for the α-accompanied fission of californium nuclei

    NASA Astrophysics Data System (ADS)

    Manimaran, K.; Balasubramaniam, M.

    2009-02-01

    A three-cluster model is proposed to explain the particle-accompanied binary fission of radioactive nuclei. The model is developed as an extension of the preformed cluster model of Gupta and collaborators. The advantage of this model is that, for a fixed third fragment, we can calculate the fragmentation potential minimized in charge coordinate. For our study we chose the various neutron-deficient to neutron-rich californium nuclei, whose analysis reveals that the closed-shell effect of any one of the fragments in ternary fragmentation presents itself as the most favorable configuration to be observed. As one goes from a neutron-deficient to a neutron-rich californium isotope, the role of the neutron closed shell associated with any one of the preferred fragments changes to that of the proton closed shell, and for very neutron rich isotopes of californium the presence of a double closed shell nucleus enhances the decay probability. The quadrupole deformation of the light fragment (A2) associated with the preferred configuration in the symmetric mass region also has a transition from positive to negative deformation as one goes from neutron-deficient to neutron-rich californium isotopes. The calculated relative yields of different fragmentation channels are compared with the available experimental yields for Cf252.

  5. Three-cluster model for the {alpha}-accompanied fission of californium nuclei

    SciTech Connect

    Manimaran, K.; Balasubramaniam, M.

    2009-02-15

    A three-cluster model is proposed to explain the particle-accompanied binary fission of radioactive nuclei. The model is developed as an extension of the preformed cluster model of Gupta and collaborators. The advantage of this model is that, for a fixed third fragment, we can calculate the fragmentation potential minimized in charge coordinate. For our study we chose the various neutron-deficient to neutron-rich californium nuclei, whose analysis reveals that the closed-shell effect of any one of the fragments in ternary fragmentation presents itself as the most favorable configuration to be observed. As one goes from a neutron-deficient to a neutron-rich californium isotope, the role of the neutron closed shell associated with any one of the preferred fragments changes to that of the proton closed shell, and for very neutron rich isotopes of californium the presence of a double closed shell nucleus enhances the decay probability. The quadrupole deformation of the light fragment (A{sub 2}) associated with the preferred configuration in the symmetric mass region also has a transition from positive to negative deformation as one goes from neutron-deficient to neutron-rich californium isotopes. The calculated relative yields of different fragmentation channels are compared with the available experimental yields for {sup 252}Cf.

  6. 48 CFR 239.7103 - Contract clauses.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7103 Contract clauses. (a) Use the clause at 252.239-7000, Protection...

  7. Final report on Seed Money Project 3210-0346: Feasibility study for californium cold neutron source

    SciTech Connect

    Alsmiller, R.G.; Henderson, D.L.; Montgomery, B.H.

    1988-10-01

    A study has been completed of the feasibility and cost of building a cold neutron source that is not dependent on a reactor or accelerator. The neutron source is provided by up to ten /sup 252/Cf capsules, each containing 50 mg of the isotope produced in the High-Flux Isotope Reactor. The neutrons are moderated by heavy water and liquid deuterium to attain, in practice, a peak cold neutron flux of 1.4 /times/ 10/sup 13/ neutrons/(m/sup 2//center dot/s). The new facility would be located in the TURF Californium Facility. The estimated cost of the Californium Cold Neutron Source Facility is $6.5 million. 6 figs., 1 tab.

  8. Apparatus for the measurement of total body nitrogen using prompt neutron activation analysis with californium-252.

    PubMed

    Mackie, A; Hannan, W J; Smith, M A; Tothill, P

    1988-01-01

    Details of clinical apparatus designed for the measurement of total body nitrogen (as an indicator of body protein), suitable for the critically ill, intensive-care patient are presented. Californium-252 radio-isotopic neutron sources are used, enabling a nitrogen measurement by prompt neutron activation analysis to be made in 40 min with a precision of +/- 3.2% for a whole body dose equivalent of 0.145 mSv. The advantages of Californium-252 over alternative neutron sources are discussed. A comparison between two irradiation/detection geometries is made, leading to an explanation of the geometry adopted for the apparatus. The choice of construction and shielding materials to reduce the count rate at the detectors and consequently to reduce the pile-up contribution to the nitrogen background is discussed. Salient features of the gamma ray spectroscopy system to reduce spectral distortion from pulse pile-up are presented.

  9. Ion-exchange chromatographic separation of einsteinium from irradiated californium targets

    SciTech Connect

    Elesin, A.A.; Nikolaev, V.M.; Shalimov, V.V.; Popov, Yu.S.; Kovantsev, V.N.; Tselishchev, I.V.; Filimonov, V.T.; Mishenev, V.B.; Yadovin, A.A.; Golosovskii, L.S.; Chetverikov, A.P.

    1987-07-01

    Einsteinium was obtained by preparing two experimental californium targets and subjecting them to neutron irradiation in a high-flux reactor. The einsteinium was separated from the bombarded targets on a column packed with KU-2U sulfonated cation-exchange resin (20-50 ..mu..m) and eluted at room temperature with an ammonium ..cap alpha..-hydroxyisobutyrate solution. Three successive separation cycles removed californium to produce einsteinium in 68% yield with a decontamination factor of 5.3 x 10/sup 6/. About 20% of the einsteinium was used up by analysis and 11% remained in intermediate fractions. The method developed yielded pure einsteinium with little fission products present. The contribution of the fission products to the total einsteinium gamma-irradiation dose rate was no greater than 81%, due primarily to the radioisotope terbium-160.

  10. Resolution concept for separation of curium from californium by ion-exchange chromatography.

    PubMed

    Aly, H F; Latimer, R M; Abdel-Rassoul, A A

    1970-04-01

    Different factors affecting separation of the tervalent actinides curium and californium by ion-exchange chromatography are discussed in the light of the resolution factor. The fact that resolution is inversely proportional to resin particle diameter and directly proportional to column length has been confirmed experimentally. The effects influencing resolution due to changes in flow-rate of the mobile phase used are dependent on resin particle diameter. Changes in temperature affect a number of variables influencing resolution.

  11. Safety Analysis Report for Packaging (SARP) of the Oak Ridge National Laboratory TRU Californium Shipping Container

    SciTech Connect

    Box, W.D.; Shappert, L.B.; Seagren, R.D.; Klima, B.B.; Jurgensen, M.C.; Hammond, C.R.; Watson, C.D.

    1980-01-01

    An analytical evaluation of the Oak Ridge National Laboratory TRU Californium Shipping Container was made in order to demonstrate its compliance with the regulations governing off-site shipment of packages that contain radioactive material. The evaluation encompassed five primary categories: structural integrity, thermal resistance, radiation shielding, nuclear criticality safety, and quality assurance. The results of this evaluation demonstrate that the container complies with the applicable regulations.

  12. 32 CFR 239.12 - Tax documentation.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 32 National Defense 2 2014-07-01 2014-07-01 false Tax documentation. 239.12 Section 239.12...) MISCELLANEOUS HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.12 Tax documentation. For disbursed funds, tax documents (if necessary) will be certified by HQUSACE Finance Center and distributed...

  13. 32 CFR 239.12 - Tax documentation.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 32 National Defense 2 2013-07-01 2013-07-01 false Tax documentation. 239.12 Section 239.12...) MISCELLANEOUS HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.12 Tax documentation. For disbursed funds, tax documents (if necessary) will be certified by HQUSACE Finance Center and distributed...

  14. 32 CFR 239.12 - Tax documentation.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 32 National Defense 2 2012-07-01 2012-07-01 false Tax documentation. 239.12 Section 239.12...) MISCELLANEOUS HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.12 Tax documentation. For disbursed funds, tax documents (if necessary) will be certified by HQUSACE Finance Center and distributed...

  15. 12 CFR 239.16 - Voluntary dissolution.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 4 2012-01-01 2012-01-01 false Voluntary dissolution. 239.16 Section 239.16... (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239.16 Voluntary dissolution. (a) A mutual holding company's board of directors may propose a plan for dissolution of the...

  16. 12 CFR 239.16 - Voluntary dissolution.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 4 2014-01-01 2014-01-01 false Voluntary dissolution. 239.16 Section 239.16... (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239.16 Voluntary dissolution. (a) A mutual holding company's board of directors may propose a plan for dissolution of the...

  17. 12 CFR 239.16 - Voluntary dissolution.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 4 2013-01-01 2013-01-01 false Voluntary dissolution. 239.16 Section 239.16... (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239.16 Voluntary dissolution. (a) A mutual holding company's board of directors may propose a plan for dissolution of the...

  18. 32 CFR 239.12 - Tax documentation.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 32 National Defense 2 2011-07-01 2011-07-01 false Tax documentation. 239.12 Section 239.12...) MISCELLANEOUS HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.12 Tax documentation. For disbursed funds, tax documents (if necessary) will be certified by HQUSACE Finance Center and distributed to...

  19. 32 CFR 239.12 - Tax Documentation.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Tax Documentation. 239.12 Section 239.12 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) MISCELLANEOUS HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.12 Tax Documentation. For...

  20. 47 CFR 90.239 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false 90.239 Section 90.239 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES PRIVATE LAND MOBILE RADIO SERVICES Non-Voice and Other Specialized Operations § 90.239...

  1. 32 CFR 239.3 - Policy.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Policy. 239.3 Section 239.3 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) MISCELLANEOUS HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.3 Policy. (a) It is DoD policy, in implementing section 3374...

  2. 49 CFR 239.5 - [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false [Reserved] 239.5 Section 239.5 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.5 [Reserved] ...

  3. 49 CFR 239.11 - Penalties.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Penalties. 239.11 Section 239.11 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.11 Penalties. Any person who violates any...

  4. 49 CFR 239.13 - Waivers.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Waivers. 239.13 Section 239.13 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.13 Waivers. (a) Any person subject to a...

  5. 49 CFR 239.5 - Preemptive effect.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Preemptive effect. 239.5 Section 239.5 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.5 Preemptive effect. Under...

  6. 49 CFR 239.15 - Information collection.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Information collection. 239.15 Section 239.15 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.15 Information collection...

  7. 49 CFR 239.5 - Preemptive effect.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Preemptive effect. 239.5 Section 239.5 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.5 Preemptive effect. Under...

  8. 49 CFR 239.13 - Waivers.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Waivers. 239.13 Section 239.13 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.13 Waivers. (a) Any person subject to a...

  9. 49 CFR 239.11 - Penalties.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Penalties. 239.11 Section 239.11 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.11 Penalties. Any person who violates any...

  10. 49 CFR 239.13 - Waivers.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Waivers. 239.13 Section 239.13 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.13 Waivers. (a) Any person subject to a...

  11. 49 CFR 239.15 - Information collection.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Information collection. 239.15 Section 239.15 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.15 Information collection...

  12. 49 CFR 239.15 - Information collection.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Information collection. 239.15 Section 239.15 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.15 Information collection...

  13. 49 CFR 239.11 - Penalties.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Penalties. 239.11 Section 239.11 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.11 Penalties. Any person who violates any...

  14. 14 CFR 121.239 - Oil valves.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 3 2011-01-01 2011-01-01 false Oil valves. 121.239 Section 121.239..., FLAG, AND SUPPLEMENTAL OPERATIONS Special Airworthiness Requirements § 121.239 Oil valves. (a) Each oil... oil shutoff means must not prevent feathering the propeller, unless equivalent safety provisions are...

  15. 14 CFR 121.239 - Oil valves.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 3 2012-01-01 2012-01-01 false Oil valves. 121.239 Section 121.239..., FLAG, AND SUPPLEMENTAL OPERATIONS Special Airworthiness Requirements § 121.239 Oil valves. (a) Each oil... oil shutoff means must not prevent feathering the propeller, unless equivalent safety provisions are...

  16. 14 CFR 121.239 - Oil valves.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 3 2014-01-01 2014-01-01 false Oil valves. 121.239 Section 121.239..., FLAG, AND SUPPLEMENTAL OPERATIONS Special Airworthiness Requirements § 121.239 Oil valves. (a) Each oil... oil shutoff means must not prevent feathering the propeller, unless equivalent safety provisions are...

  17. 14 CFR 121.239 - Oil valves.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 3 2013-01-01 2013-01-01 false Oil valves. 121.239 Section 121.239..., FLAG, AND SUPPLEMENTAL OPERATIONS Special Airworthiness Requirements § 121.239 Oil valves. (a) Each oil... oil shutoff means must not prevent feathering the propeller, unless equivalent safety provisions are...

  18. 12 CFR 239.41 - Employment contracts.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 4 2013-01-01 2013-01-01 false Employment contracts. 239.41 Section 239.41... (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Indemnification; Employment Contracts § 239.41 Employment contracts. (a) General. A mutual holding company may enter into an employment contract with its...

  19. 32 CFR 239.8 - Funding.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 32 National Defense 2 2012-07-01 2012-07-01 false Funding. 239.8 Section 239.8 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) MISCELLANEOUS HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.8 Funding. (a) Revolving fund account. The revolving fund...

  20. 32 CFR 239.8 - Funding.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 32 National Defense 2 2013-07-01 2013-07-01 false Funding. 239.8 Section 239.8 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) MISCELLANEOUS HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.8 Funding. (a) Revolving fund account. The revolving fund...

  1. 32 CFR 239.8 - Funding.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 32 National Defense 2 2014-07-01 2014-07-01 false Funding. 239.8 Section 239.8 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) MISCELLANEOUS HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.8 Funding. (a) Revolving fund account. The revolving fund...

  2. 49 CFR 239.11 - Penalties.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Penalties. 239.11 Section 239.11 Transportation... TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.11 Penalties. Any person who violates any requirement of this part or causes the violation of any such requirement is subject to a civil penalty of...

  3. 32 CFR 239.7 - Responsibilities.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Responsibilities. 239.7 Section 239.7 National... HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.7 Responsibilities. (a) The DUSD(I&E), under the... Chief of Engineers, has been delegated authority and responsibility for the execution of HAP....

  4. 49 CFR 239.11 - Penalties.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Penalties. 239.11 Section 239.11 Transportation... TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.11 Penalties. Any person who violates any requirement of this part or causes the violation of any such requirement is subject to a civil penalty of at...

  5. 49 CFR 239.303 - Electronic recordkeeping.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Electronic recordkeeping. 239.303 Section 239.303...; Inspection of Records and Recordkeeping § 239.303 Electronic recordkeeping. Each railroad to which this part applies is authorized to retain by electronic recordkeeping the information prescribed in §...

  6. 12 CFR 239.26 - Shareholders.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 4 2014-01-01 2014-01-01 false Shareholders. 239.26 Section 239.26 Banks and...) MUTUAL HOLDING COMPANIES (REGULATION MM) Subsidiary Holding Companies § 239.26 Shareholders. (a) Shareholder meetings. An annual meeting of the shareholders of the subsidiary holding company for the election...

  7. 12 CFR 239.26 - Shareholders.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 4 2012-01-01 2012-01-01 false Shareholders. 239.26 Section 239.26 Banks and...) MUTUAL HOLDING COMPANIES (REGULATION MM) Subsidiary Holding Companies § 239.26 Shareholders. (a) Shareholder meetings. An annual meeting of the shareholders of the subsidiary holding company for the election...

  8. 49 CFR 239.5 - Preemptive effect.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Preemptive effect. 239.5 Section 239.5 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.5 Preemptive effect....

  9. 49 CFR 239.5 - Preemptive effect.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Preemptive effect. 239.5 Section 239.5 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.5 Preemptive effect....

  10. 14 CFR 121.239 - Oil valves.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Oil valves. 121.239 Section 121.239..., FLAG, AND SUPPLEMENTAL OPERATIONS Special Airworthiness Requirements § 121.239 Oil valves. (a) Each oil... oil shutoff means must not prevent feathering the propeller, unless equivalent safety provisions...

  11. 33 CFR 239.5 - Engineering considerations.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Engineering considerations. 239.5 Section 239.5 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF... § 239.5 Engineering considerations. Reports on proposals to provide covered channels shall include a...

  12. 33 CFR 239.5 - Engineering considerations.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Engineering considerations. 239.5 Section 239.5 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF... § 239.5 Engineering considerations. Reports on proposals to provide covered channels shall include a...

  13. 33 CFR 239.5 - Engineering considerations.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Engineering considerations. 239.5 Section 239.5 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF... § 239.5 Engineering considerations. Reports on proposals to provide covered channels shall include a...

  14. 33 CFR 239.5 - Engineering considerations.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Engineering considerations. 239.5 Section 239.5 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF... § 239.5 Engineering considerations. Reports on proposals to provide covered channels shall include a...

  15. 33 CFR 239.5 - Engineering considerations.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Engineering considerations. 239.5 Section 239.5 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF... § 239.5 Engineering considerations. Reports on proposals to provide covered channels shall include a...

  16. 12 CFR 239.5 - Membership rights.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 4 2014-01-01 2014-01-01 false Membership rights. 239.5 Section 239.5 Banks... (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239.5 Membership rights. (a... depositors of the resulting association the same membership rights in the mutual holding company as...

  17. 12 CFR 239.5 - Membership rights.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 4 2013-01-01 2013-01-01 false Membership rights. 239.5 Section 239.5 Banks... (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239.5 Membership rights. (a... depositors of the resulting association the same membership rights in the mutual holding company as...

  18. 12 CFR 239.5 - Membership rights.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 4 2012-01-01 2012-01-01 false Membership rights. 239.5 Section 239.5 Banks... (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239.5 Membership rights. (a... depositors of the resulting association the same membership rights in the mutual holding company as...

  19. 48 CFR 239.7409 - Special assembly.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Special assembly. 239.7409 Section 239.7409 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT... Services 239.7409 Special assembly. (a) Special assembly is the designing, manufacturing, arranging...

  20. 48 CFR 239.7409 - Special assembly.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Special assembly. 239.7409 Section 239.7409 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT... Services 239.7409 Special assembly. (a) Special assembly is the designing, manufacturing, arranging...

  1. 46 CFR 169.239 - Hull.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Hull. 169.239 Section 169.239 Shipping COAST GUARD... Certification Inspections § 169.239 Hull. At each inspection for certification and periodic inspection, the vessel must be afloat and ready for the following tests and inspections of the hull structure and its...

  2. 49 CFR 239.303 - Electronic recordkeeping.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Electronic recordkeeping. 239.303 Section 239.303...; Inspection of Records and Recordkeeping § 239.303 Electronic recordkeeping. Each railroad to which this part applies is authorized to retain by electronic recordkeeping the information prescribed in §...

  3. 43 CFR 23.9 - Performance bond.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 43 Public Lands: Interior 1 2011-10-01 2011-10-01 false Performance bond. 23.9 Section 23.9 Public... LANDS § 23.9 Performance bond. (a)(1) Upon approval of an exploration plan or mining plan, the operator shall be required to file a suitable performance bond of not less than $2,000 with satisfactory...

  4. 37 CFR 2.39 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2010-07-01 2010-07-01 false 2.39 Section 2.39 Patents, Trademarks, and Copyrights UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE RULES OF PRACTICE IN TRADEMARK CASES The Written Application § 2.39 ...

  5. 37 CFR 2.39 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2011-07-01 2011-07-01 false 2.39 Section 2.39 Patents, Trademarks, and Copyrights UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE RULES OF PRACTICE IN TRADEMARK CASES The Written Application § 2.39 ...

  6. 12 CFR 239.52 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 4 2014-01-01 2014-01-01 false Definitions. 239.52 Section 239.52 Banks and...) MUTUAL HOLDING COMPANIES (REGULATION MM) Conversions From Mutual to Stock Form § 239.52 Definitions. The... conversion. (b) Eligibility record date is the date for determining eligible account holders. The eligibility...

  7. 12 CFR 239.52 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 4 2013-01-01 2013-01-01 false Definitions. 239.52 Section 239.52 Banks and...) MUTUAL HOLDING COMPANIES (REGULATION MM) Conversions From Mutual to Stock Form § 239.52 Definitions. The... conversion. (b) Eligibility record date is the date for determining eligible account holders. The eligibility...

  8. 12 CFR 239.52 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 4 2012-01-01 2012-01-01 false Definitions. 239.52 Section 239.52 Banks and...) MUTUAL HOLDING COMPANIES (REGULATION MM) Conversions from Mutual to Stock Form § 239.52 Definitions. The... conversion. (b) Eligibility record date is the date for determining eligible account holders. The eligibility...

  9. 49 CFR 239.15 - Information collection.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Information collection. 239.15 Section 239.15..., DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.15 Information collection. (a) The information collection requirements of this part have been reviewed by the Office...

  10. 48 CFR 239.7101 - Definition.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7101 Definition. Information assurance, as used in this subpart,...

  11. 48 CFR 239.101 - Policy.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY General 239.101 Policy... on the acquisition of commercial computer software and commercial computer software documentation....

  12. 48 CFR 239.7101 - Definition.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7101 Definition. Information assurance, as used in this subpart,...

  13. 48 CFR 239.101 - Policy.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY General 239.101 Policy... on the acquisition of commercial computer software and commercial computer software documentation....

  14. 48 CFR 239.7101 - Definition.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7101 Definition. Information assurance, as used in this subpart,...

  15. 48 CFR 239.101 - Policy.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY General 239.101 Policy... on the acquisition of commercial computer software and commercial computer software documentation....

  16. 48 CFR 239.7101 - Definition.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7101 Definition. Information assurance, as used in this subpart,...

  17. 48 CFR 239.7101 - Definition.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7101 Definition. Information assurance, as used in this subpart, means...

  18. Possible stabilization of the tetravalent oxidation state of berkelium and californium in acetonitrile with triphenylarsine oxide

    SciTech Connect

    Payne, G.F.; Peterson, J.R.

    1987-01-01

    It appears that we may have prepared Bk(IV) nitrate.nTPAs0 and Bk(IV) perchlorate.nTPAs0 complexes which formed the corresponding Cf(IV) complexes through the beta decay of Bk-249. Definitive proof should come from similar experiments with quantities of Bk-249 large enough to allow spectrophotometric detection of the characteristic f..-->..f transitions in these berkelium and californium species. It is clear, however, that TPAs0 and acetonitrile can play a pivotal role in the stabilization of lanact(IV) species.

  19. 33 CFR 136.239 - Proof.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Proof. 136.239 Section 136.239 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) MARINE POLLUTION FINANCIAL RESPONSIBILITY AND COMPENSATION OIL SPILL LIABILITY TRUST FUND; CLAIMS PROCEDURES; DESIGNATION OF...

  20. 33 CFR 136.239 - Proof.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Proof. 136.239 Section 136.239 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) MARINE POLLUTION FINANCIAL RESPONSIBILITY AND COMPENSATION OIL SPILL LIABILITY TRUST FUND; CLAIMS PROCEDURES; DESIGNATION OF...

  1. 12 CFR 239.55 - Filing requirements.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    .... (iii) Proxy soliciting materials under § 239.57(d), including: (A) A preliminary proxy statement with signed financial statements; (B) A form of proxy meeting the requirements of § 239.57(b); and (C) Any additional proxy soliciting materials, including press releases, personal solicitation instructions, radio or...

  2. 12 CFR 239.10 - Procedural requirements.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... requirements. (a) Proxies and proxy statements—(1) Solicitation of proxies. The provisions of §§ 239.56 and 239.57(a) through (d) and (f) through (h) shall apply to all solicitations of proxies by any person in connection with any membership vote required by this part. Proxy materials must be in the form specified by...

  3. 12 CFR 239.55 - Filing requirements.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    .... (iii) Proxy soliciting materials under § 239.57(d), including: (A) A preliminary proxy statement with signed financial statements; (B) A form of proxy meeting the requirements of § 239.57(b); and (C) Any additional proxy soliciting materials, including press releases, personal solicitation instructions, radio or...

  4. 12 CFR 239.10 - Procedural requirements.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... requirements. (a) Proxies and proxy statements—(1) Solicitation of proxies. The provisions of §§ 239.56 and 239.57(a) through (d) and (f) through (h) shall apply to all solicitations of proxies by any person in connection with any membership vote required by this part. Proxy materials must be in the form specified by...

  5. 14 CFR 23.239 - Spray characteristics.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Spray characteristics. 23.239 Section 23.239 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT... the pilots or damage the propellers or other parts of a seaplane or amphibian at any time during...

  6. 14 CFR 23.239 - Spray characteristics.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 1 2012-01-01 2012-01-01 false Spray characteristics. 23.239 Section 23.239 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT... the pilots or damage the propellers or other parts of a seaplane or amphibian at any time during...

  7. 33 CFR 239.8 - Cost sharing.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Cost sharing. 239.8 Section 239.8 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE WATER... for recreation facilities at local protection projects. Cost-sharing policies for project...

  8. 33 CFR 239.8 - Cost sharing.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Cost sharing. 239.8 Section 239.8 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE WATER... for recreation facilities at local protection projects. Cost-sharing policies for project...

  9. 33 CFR 239.8 - Cost sharing.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Cost sharing. 239.8 Section 239.8 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE WATER... for recreation facilities at local protection projects. Cost-sharing policies for project...

  10. 7 CFR 1209.239 - Financial statements.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 10 2014-01-01 2014-01-01 false Financial statements. 1209.239 Section 1209.239 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE MUSHROOM PROMOTION, RESEARCH...

  11. 7 CFR 1209.239 - Financial statements.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 10 2012-01-01 2012-01-01 false Financial statements. 1209.239 Section 1209.239 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE MUSHROOM PROMOTION, RESEARCH...

  12. 7 CFR 1209.239 - Financial statements.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 10 2013-01-01 2013-01-01 false Financial statements. 1209.239 Section 1209.239 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE MUSHROOM PROMOTION, RESEARCH...

  13. 25 CFR 700.239 - Records available.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... spirit of the Freedom of Information Act. (b) Statutory disclosure requirement. The Freedom of... 25 Indians 2 2014-04-01 2014-04-01 false Records available. 700.239 Section 700.239 Indians THE... or foreign policy and in fact properly classified pursuant to such Executive Order; (2)...

  14. 25 CFR 700.239 - Records available.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... spirit of the Freedom of Information Act. (b) Statutory disclosure requirement. The Freedom of... 25 Indians 2 2013-04-01 2013-04-01 false Records available. 700.239 Section 700.239 Indians THE... or foreign policy and in fact properly classified pursuant to such Executive Order; (2)...

  15. 48 CFR 239.7103 - Contract clauses.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7103 Contract clauses. (a) Use the clause at 252.239-7000, Protection Against Compromising Emanations, in solicitations and contracts involving information technology...

  16. 48 CFR 239.7103 - Contract clauses.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7103 Contract clauses. (a) Use the clause at 252.239-7000, Protection Against Compromising Emanations, in solicitations and contracts involving information technology...

  17. 48 CFR 239.7103 - Contract clauses.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7103 Contract clauses. (a) Use the clause at 252.239-7000, Protection Against Compromising Emanations, in solicitations and contracts involving information technology...

  18. 48 CFR 239.7103 - Contract clauses.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7103 Contract clauses. (a) Use the clause at 252.239-7000, Protection Against Compromising Emanations, in solicitations and contracts involving information technology...

  19. 48 CFR 239.7408 - Special construction.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Special construction. 239.7408 Section 239.7408 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  20. 48 CFR 239.7408-1 - General.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false General. 239.7408-1 Section 239.7408-1 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  1. 48 CFR 239.7201 - Solicitation requirements.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Solicitation requirements. 239.7201 Section 239.7201 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  2. 48 CFR 239.7408-1 - General.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false General. 239.7408-1 Section 239.7408-1 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  3. 48 CFR 239.7411 - Contract clauses.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Contract clauses. 239.7411 Section 239.7411 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Telecommunications...

  4. 48 CFR 239.7303 - Authorized individuals.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Authorized individuals. 239.7303 Section 239.7303 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  5. 48 CFR 239.7411 - Contract clauses.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Contract clauses. 239.7411 Section 239.7411 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Telecommunications...

  6. 48 CFR 239.7201 - Solicitation requirements.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Solicitation requirements. 239.7201 Section 239.7201 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  7. 48 CFR 239.7411 - Contract clauses.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Contract clauses. 239.7411 Section 239.7411 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Telecommunications...

  8. 48 CFR 239.7201 - Solicitation requirements.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Solicitation requirements. 239.7201 Section 239.7201 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  9. 48 CFR 239.7409 - Special assembly.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Special assembly. 239.7409 Section 239.7409 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Telecommunications...

  10. 48 CFR 239.7411 - Contract clauses.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Contract clauses. 239.7411 Section 239.7411 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Telecommunications...

  11. 48 CFR 239.7408 - Special construction.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Special construction. 239.7408 Section 239.7408 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  12. 48 CFR 239.7201 - Solicitation requirements.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Solicitation requirements. 239.7201 Section 239.7201 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  13. 48 CFR 239.7409 - Special assembly.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Special assembly. 239.7409 Section 239.7409 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Telecommunications...

  14. 48 CFR 239.7408-1 - General.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false General. 239.7408-1 Section 239.7408-1 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  15. 33 CFR 239.4 - Policy.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Policy. 239.4 Section 239.4 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE WATER... without incurring an unjustified loss in net NED or EQ benefits. ...

  16. 33 CFR 239.4 - Policy.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Policy. 239.4 Section 239.4 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE WATER... without incurring an unjustified loss in net NED or EQ benefits. ...

  17. 12 CFR 239.2 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 4 2014-01-01 2014-01-01 false Definitions. 239.2 Section 239.2 Banks and... an associate of a person. (3) Any natural person who is related by blood or marriage to such person... any Federal Home Loan Bank, or (2) Any company the majority of shares of which is owned by: (i)...

  18. 12 CFR 239.2 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 4 2012-01-01 2012-01-01 false Definitions. 239.2 Section 239.2 Banks and... an associate of a person. (3) Any natural person who is related by blood or marriage to such person... any Federal Home Loan Bank, or (2) Any company the majority of shares of which is owned by: (i)...

  19. 12 CFR 239.2 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 4 2013-01-01 2013-01-01 false Definitions. 239.2 Section 239.2 Banks and... an associate of a person. (3) Any natural person who is related by blood or marriage to such person... any Federal Home Loan Bank, or (2) Any company the majority of shares of which is owned by: (i)...

  20. 7 CFR 1209.239 - Financial statements.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 10 2011-01-01 2011-01-01 false Financial statements. 1209.239 Section 1209.239 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE MUSHROOM PROMOTION,...

  1. 7 CFR 1209.239 - Financial statements.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Financial statements. 1209.239 Section 1209.239 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE MUSHROOM PROMOTION,...

  2. 48 CFR 239.7201 - Solicitation requirements.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Solicitation requirements. 239.7201 Section 239.7201 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION...

  3. 12 CFR 239.10 - Procedural requirements.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... information is relevant to the action that members are being asked to approve, with such additions, deletions... disclosure standard set forth in § 239.57(f). File proxies and proxy statements in accordance with § 239.55(c... may amend any notice or application submitted pursuant to this part or file additional information...

  4. Spontaneous Partitioning of Californium from Curium: Curious Cases from the Crystallization of Curium Coordination Complexes

    SciTech Connect

    Cary, Samantha K.; Silver, Mark A.; Liu, Guokui; Wang, Jamie C.; Bogart, Justin A.; Stritzinger, Jared T.; Arico, Alexandra A.; Hanson, Kenneth; Schelter, Eric J.; Albrecht-Schmitt, Thomas E.

    2015-12-07

    The reaction of 248CmCl3 with excess 2,6-pyridinedicarboxylic acid (DPA) under mild solvothermal conditions results in crystallization of the tris-chelate complex Cm(HDPA)3·H2O. Approximately half of the curium remains in solution at the end of this process, and evaporation of the mother liquor results in crystallization of the bis-chelate complex [Cm(HDPA)- (H2DPA)(H2O)2Cl]Cl·2H2O. 248Cm is the daughter of the α decay of 252Cf and is extracted in high purity from this parent. However, trace amounts of 249,250,251Cf are still present in all samples of 248Cm. During the crystallization of Cm(HDPA)3·H2O and [Cm(HDPA)(H2DPA)(H2O)2Cl]Cl·2H2O, californium(III) spontaneously separates itself from the curium complexes and is found doped within crystals of DPA in the form of Cf(HDPA)3. These results add to the growing body of evidence that the chemistry of californium is fundamentally different from that of earlier actinides.

  5. Spontaneous Partitioning of Californium from Curium: Curious Cases from the Crystallization of Curium Coordination Complexes.

    PubMed

    Cary, Samantha K; Silver, Mark A; Liu, Guokui; Wang, Jamie C; Bogart, Justin A; Stritzinger, Jared T; Arico, Alexandra A; Hanson, Kenneth; Schelter, Eric J; Albrecht-Schmitt, Thomas E

    2015-12-07

    The reaction of (248)CmCl3 with excess 2,6-pyridinedicarboxylic acid (DPA) under mild solvothermal conditions results in crystallization of the tris-chelate complex Cm(HDPA)3 · H2O. Approximately half of the curium remains in solution at the end of this process, and evaporation of the mother liquor results in crystallization of the bis-chelate complex [Cm(HDPA)(H2DPA)(H2O)2Cl]Cl·2H2O. (248)Cm is the daughter of the α decay of (252)Cf and is extracted in high purity from this parent. However, trace amounts of (249,250,251)Cf are still present in all samples of (248)Cm. During the crystallization of Cm(HDPA)3 · H2O and [Cm(HDPA)(H2DPA)(H2O)2Cl]Cl · 2H2O, californium(III) spontaneously separates itself from the curium complexes and is found doped within crystals of DPA in the form of Cf(HDPA)3. These results add to the growing body of evidence that the chemistry of californium is fundamentally different from that of earlier actinides.

  6. 13. BUILDING 239. ARTILLERY PRIMER SHOP. ADDITIONS AND ALTERATIONS. FIRST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    13. BUILDING 239. ARTILLERY PRIMER SHOP. ADDITIONS AND ALTERATIONS. FIRST FLOOR PLAN AND ELEVATIONS. May 12, 1920. - Frankford Arsenal, Building Nos. 239-239A, Southeast corner of Clay Street & Cray Road, Philadelphia, Philadelphia County, PA

  7. 48 CFR 239.7409 - Special assembly.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Telecommunications Services 239.7409 Special assembly. (a) Special assembly is the designing, manufacturing, arranging... not possible to negotiate in advance, use provisional rates and charges subject to adjustment,...

  8. 48 CFR 239.7400 - Scope.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Telecommunications... definition of information technology. ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Scope. 239.7400 Section...

  9. 48 CFR 239.7400 - Scope.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Telecommunications... definition of information technology. ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Scope. 239.7400 Section...

  10. 48 CFR 239.7400 - Scope.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Telecommunications... definition of information technology. ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Scope. 239.7400 Section...

  11. 48 CFR 239.7400 - Scope.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Telecommunications... definition of information technology. ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Scope. 239.7400 Section...

  12. First structural determination of a trivalent californium compound with oxygen coordination.

    PubMed

    Sykora, Richard E; Assefa, Zerihun; Haire, Richard G; Albrecht-Schmitt, Thomas E

    2006-01-23

    Single crystals of Cf(IO(3))(3) (1) were synthesized by the hydrothermal reaction of CfCl(3) and H(5)IO(6), and the structure was determined with single-crystal X-ray diffraction. This structural determination of 1 represents the first for a trivalent californium compound containing oxygen coordination. This compound has been further characterized with the use of Raman spectroscopy and emission spectroscopy. Crystallographic data: Cf(IO(3))(3), monoclinic, space group P2(1)/n, a = 8.7994(10) A, b = 5.9388(7) A, c = 15.157(2) A, beta = 96.833(2) degrees , V = 786.43(16) A(3), Z = 4 (T = 295 K).

  13. 48 CFR 252.239-7013 - Obligation of the Government.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Government. 252.239-7013 Section 252.239-7013 Federal Acquisition Regulations System DEFENSE ACQUISITION... of Provisions And Clauses 252.239-7013 Obligation of the Government. As prescribed in 239.7411(c), use the following clause: Obligation of the Government (JUL 2006) (a) This basic agreement is not...

  14. 48 CFR 252.239-7013 - Obligation of the Government.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Government. 252.239-7013 Section 252.239-7013 Federal Acquisition Regulations System DEFENSE ACQUISITION... of Provisions And Clauses 252.239-7013 Obligation of the Government. As prescribed in 239.7411(c), use the following clause: Obligation of the Government (JUL 2006) (a) This basic agreement is not...

  15. 48 CFR 252.239-7013 - Obligation of the Government.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Government. 252.239-7013 Section 252.239-7013 Federal Acquisition Regulations System DEFENSE ACQUISITION... of Provisions And Clauses 252.239-7013 Obligation of the Government. As prescribed in 239.7411(c), use the following clause: Obligation of the Government (JUL 2006) (a) This basic agreement is not...

  16. 48 CFR 252.239-7013 - Obligation of the Government.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Government. 252.239-7013 Section 252.239-7013 Federal Acquisition Regulations System DEFENSE ACQUISITION... of Provisions And Clauses 252.239-7013 Obligation of the Government. As prescribed in 239.7411(c), use the following clause: Obligation of the Government (JUL 2006) (a) This basic agreement is not...

  17. Phase I-II clinical trial of Californium-252. Treatment of stage IB carcinoma of the cervix.

    PubMed

    Maruyama, Y; VanNagell, J R; Yoneda, J; Donaldson, E; Gallion, H; Rowley, K; Kryscio, R; Beach, J L

    1987-04-15

    Intracavitary Californium-252 combined with whole-pelvis photon radiotherapy was tested as the sole form of treatment for 22 patients with Stage IB carcinoma of the cervix. Californium-252 (Cf) is a fast neutron-emitting radioisotope currently being tested in trials of neutron brachytherapy (NT). The outcomes of the treated group of patients were traced for local tumor control, survival, patterns of failure, and complications. The Cf intracavitary therapy combined with whole-pelvis photon radiotherapy resulted in 95% 2-year and 91% 5-year actuarial survival. There were 9% Grade II-III complications by the Stockholm scale and 4% local failures. These results were obtained in an early clinical trial with a group of largely poor-risk patients with tumors of mean diameter of 4.3 cm.

  18. Phase I-II clinical trial of Californium-252. Treatment of stage IB carcinoma of the cervix

    SciTech Connect

    Maruyama, Y.; VanNagell, J.R.; Yoneda, J.; Donaldson, E.; Gallion, H.; Rowley, K.; Kryscio, R.; Beach, J.L.

    1987-04-15

    Intracavitary Californium-252 combined with whole-pelvis photon radiotherapy was tested as the sole form of treatment for 22 patients with Stage IB carcinoma of the cervix. Californium-252 (Cf) is a fast neutron-emitting radioisotope currently being tested in trials of neutron brachytherapy (NT). The outcomes of the treated group of patients were traced for local tumor control, survival, patterns of failure, and complications. The Cf intracavitary therapy combined with whole-pelvis photon radiotherapy resulted in 95% 2-year and 91% 5-year actuarial survival. There were 9% Grade II-III complications by the Stockholm scale and 4% local failures. These results were obtained in an early clinical trial with a group of largely poor-risk patients with tumors of mean diameter of 4.3 cm.

  19. Design of the injection beamline for the Californium Rare Isotope Breeder Upgrade electron beam ion source for charge breeder

    SciTech Connect

    Dickerson C. A.; Pikin A.; Mustapha, B.; Kondrashev, S.; Ostroumov, P.N.; Savard, S.; Levand, A.

    2012-02-07

    The design of the ion injection line connecting the electron beam ion source (EBIS) charge breeder and the Californium Rare Isotope Breeder Upgrade radio frequency quadrupole cooler-buncher at the Argonne Tandem Linear Accelerator System was investigated with particle tracking simulations. The injection line was configured to accommodate several differential pumping sections, individual optical components were optimized to minimize emittance growth, and the ion beam parameters were matched with the EBIS electron beam acceptance to minimize losses upon injection.

  20. Design of the injection beamline for the Californium Rare Isotope Breeder Upgrade electron beam ion source charge breeder

    SciTech Connect

    Dickerson, C. A.; Mustapha, B.; Kondrashev, S.; Ostroumov, P. N.; Savard, G.; Levand, A.; Pikin, A.

    2012-02-15

    The design of the ion injection line connecting the electron beam ion source (EBIS) charge breeder and the Californium Rare Isotope Breeder Upgrade radio frequency quadrupole cooler-buncher at the Argonne Tandem Linear Accelerator System was investigated with particle tracking simulations. The injection line was configured to accommodate several differential pumping sections, individual optical components were optimized to minimize emittance growth, and the ion beam parameters were matched with the EBIS electron beam acceptance to minimize losses upon injection.

  1. Design of the injection beamline for the Californium Rare Isotope Breeder Upgrade electron beam ion source charge breedera)

    NASA Astrophysics Data System (ADS)

    Dickerson, C. A.; Mustapha, B.; Kondrashev, S.; Ostroumov, P. N.; Savard, G.; Levand, A.; Pikin, A.

    2012-02-01

    The design of the ion injection line connecting the electron beam ion source (EBIS) charge breeder and the Californium Rare Isotope Breeder Upgrade radio frequency quadrupole cooler-buncher at the Argonne Tandem Linear Accelerator System was investigated with particle tracking simulations. The injection line was configured to accommodate several differential pumping sections, individual optical components were optimized to minimize emittance growth, and the ion beam parameters were matched with the EBIS electron beam acceptance to minimize losses upon injection.

  2. Design of the injection beamline for the Californium Rare Isotope Breeder Upgrade electron beam ion source charge breeder.

    PubMed

    Dickerson, C A; Mustapha, B; Kondrashev, S; Ostroumov, P N; Savard, G; Levand, A; Pikin, A

    2012-02-01

    The design of the ion injection line connecting the electron beam ion source (EBIS) charge breeder and the Californium Rare Isotope Breeder Upgrade radio frequency quadrupole cooler-buncher at the Argonne Tandem Linear Accelerator System was investigated with particle tracking simulations. The injection line was configured to accommodate several differential pumping sections, individual optical components were optimized to minimize emittance growth, and the ion beam parameters were matched with the EBIS electron beam acceptance to minimize losses upon injection.

  3. Convenient method of simultaneously analyzing aluminum and magnesium in pharmaceutical dosage forms using californium-252 thermal neutron activation.

    PubMed

    Landolt, R R; Hem, S L

    1983-05-01

    A commercial antacid suspension containing aluminum hydroxide and magnesium hydroxide products was used as a model sample to study the use of a californium-252 thermal neutron activation as a method for quantifying aluminum content as well as for the simultaneous assay of aluminum and magnesium. A 3.5-micrograms californium-252 source was used for the activation, and the induced aluminum-28 and magnesium-27 activity was simultaneously measured by sodium iodide crystal gamma-ray spectrometry using dual single-channel analyzers and scalers. The antacid suspension was contained in a chamber designed with the unique capability of serving as the container for counting the induced radioactivity in addition to being the irradiation chamber itself. Ten replicate irradiations were performed, and the precision was compared with 10 replicate analyses of the antacid suspension using the official ethylenediaminetetraacetic acid titration method. For aluminum the precision was 1.4 versus 0.62% for the titration method. For the magnesium the precision was 5.3 versus 0.79% for the titration method. This pilot study demonstrated that use of more intense californium-252 sources, which are commonly available, would provide a method that is competitive with the ethylenediaminetetraacetic acid titration method in precision and in other aspects as well.

  4. Neutron Capture Cross Section of 239Pu

    NASA Astrophysics Data System (ADS)

    Mosby, S.; Arnold, C.; Bredeweg, T. A.; Couture, A.; Jandel, M.; O'Donnell, J. M.; Rusev, G.; Ullmann, J. L.; Chyzh, A.; Henderson, R.; Kwan, E.; Wu, C. Y.

    2014-09-01

    The 239Pu(n,γ) cross section has been measured over the energy range 10 eV - 10 keV using the Detector for Advanced Neutron Capture Experiments (DANCE) as part of a campaign to produce precision (n,γ) measurements on 239Pu in the keV region. Fission coincidences were measured with a PPAC and used to characterize the prompt fission γ-ray spectrum in this region. The resulting spectra will be used to better characterize the fission component of another experiment with a thicker target to extend the (n,γ) cross section measurement well into the keV region.

  5. 48 CFR 239.7001 - Policy.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Information Technology 239.7001 Policy. Agencies shall follow the procedures in DoD 4140.1-R, DoD Supply Chain Materiel Management Regulation, Chapter 9, Section C9.5, when considering the exchange or sale of...

  6. 48 CFR 239.7001 - Policy.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Information Technology 239.7001 Policy. Agencies shall follow the procedures in DoD 4140.1-R, DoD Supply Chain Materiel Management Regulation, Chapter 9, Section C9.5, when considering the exchange or sale of...

  7. 48 CFR 239.7001 - Policy.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Information Technology 239.7001 Policy. Agencies shall follow the procedures in DoD 4140.1-R, DoD Supply Chain Materiel Management Regulation, Chapter 9, Section C9.5, when considering the exchange or sale of...

  8. 48 CFR 239.7001 - Policy.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Information Technology 239.7001 Policy. Agencies shall follow the procedures in DoD 4140.1-R, DoD Supply Chain Materiel Management Regulation, Chapter 9, Section C9.5, when considering the exchange or sale of...

  9. 48 CFR 239.7001 - Policy.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Information Technology 239.7001 Policy. Agencies shall follow the procedures in DoD 4140.1-R, DoD Supply Chain Materiel Management Regulation, Chapter 9, Section C9.5, when considering the exchange or sale of...

  10. 49 CFR 239.3 - Application.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.3 Application. (a) Except as provided in... passenger train service on standard gage track which is part of the general railroad system of transportation; (2) Railroads that provide commuter or other short-haul rail passenger train service in a...

  11. 49 CFR 239.3 - Application.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.3 Application. (a) Except as provided in... passenger train service on standard gage track which is part of the general railroad system of transportation; (2) Railroads that provide commuter or other short-haul rail passenger train service in a...

  12. 49 CFR 239.3 - Application.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.3 Application. (a) Except as provided in... passenger train service on standard gage track which is part of the general railroad system of transportation; (2) Railroads that provide commuter or other short-haul rail passenger train service in a...

  13. Nuclear Data Sheets for A = 239

    SciTech Connect

    Browne, E.; Tuli, J.K.

    2014-11-15

    Spectroscopic data and level schemes from radioactive decay and nuclear reaction studies are presented here for all nuclei with mass number A=239. In general, a relatively small amount of new data on this mass chain has been reported since the previous evaluation in 2003. However, special evaluations, such as “Database of prompt gamma rays from slow neutron–capture from elemental analysis” (2007ChZX), have provided additional precise data for levels in {sup 239}U. Also, new Coulomb excitation measurements in {sup 239}Pu have extended the knowledge of the 1/2[631] rotational band up to Jπ=(55/2+), and that of the octupole vibrational band up to Jπ=(53/2−). For historical knowledge it is worth mentioning the report on the “Discovery of isotopes of the transuranium elements with 93 <= Z <= 98” (2013Fr02), where the information for elements Np, Pu, Am, and Cf with mass number A=239 is presented. The alpha hindrance factors (HF) presented in this evaluation were calculated using values of the radius parameter (r{sub 0}) interpolated from those for even–even adjacent nuclei given by 1998Ak04.

  14. 12 CFR 239.55 - Filing requirements.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... offering circular described in § 239.58(a). (v) The documents and information required by Form AC. The mutual holding company may obtain Form AC from the appropriate Reserve Bank and the Board's Web site..., or certified any statement, report, or valuation for use. See Form AC, instruction B(7). (vii)...

  15. 48 CFR 239.7102-1 - General.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ..., DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7102-1 General. (a) Agencies shall ensure that information assurance is provided for information technology in accordance with current policies, procedures, and statutes,...

  16. 48 CFR 239.7102-1 - General.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ..., DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7102-1 General. (a) Agencies shall ensure that information assurance is provided for information technology in accordance with current policies, procedures, and statutes,...

  17. 48 CFR 239.7102-1 - General.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ..., DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7102-1 General. (a) Agencies shall ensure that information assurance is provided for information technology in accordance with current policies, procedures, and statutes,...

  18. 32 CFR 239.4 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.4 Definitions. (a) Armed Forces. The Army, Navy... sellers' closing costs that are customary for the region where the home is located. Applicant's realtor or... mortgage balance. (d) Deployment. Performing service in a training exercise or operation at a location...

  19. 48 CFR 239.7301 - Applicability.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... shall be applied to acquisition of information technology for national security systems, as that term is... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Requirements for... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Applicability. 239.7301...

  20. 43 CFR 23.9 - Performance bond.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Lands: Interior Office of the Secretary of the Interior SURFACE EXPLORATION, MINING AND RECLAMATION OF LANDS § 23.9 Performance bond. (a)(1) Upon approval of an exploration plan or mining plan, the operator... exploration or mining plan as approved, amended or supplemented. The bond shall be in an amount sufficient to...

  1. 48 CFR 239.7102-1 - General.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ..., DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7102-1 General. (a) Agencies shall ensure that information assurance is... include— (1) The National Security Act; (2) The Clinger-Cohen Act; (3) National Security...

  2. 48 CFR 239.7102-1 - General.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ..., DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7102-1 General. (a) Agencies shall ensure that information assurance is... include— (1) The National Security Act; (2) The Clinger-Cohen Act; (3) National Security...

  3. 7 CFR 58.239 - Drying.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... SPECIFICATIONS FOR APPROVED PLANTS AND STANDARDS FOR GRADES OF DAIRY PRODUCTS 1 General Specifications for Dairy Plants Approved for USDA Inspection and Grading Service 1 Operations and Operating Procedures § 58.239 Drying. Each dryer should be operated to produce the highest quality dry product consistent with the most...

  4. Fast and efficient charge breeding of the Californium rare isotope breeder upgrade electron beam ion source

    NASA Astrophysics Data System (ADS)

    Ostroumov, P. N.; Barcikowski, A.; Dickerson, C. A.; Perry, A.; Pikin, A. I.; Sharamentov, S. I.; Vondrasek, R. C.; Zinkann, G. P.

    2015-08-01

    The Electron Beam Ion Source (EBIS), developed to breed Californium Rare Isotope Breeder Upgrade (CARIBU) radioactive beams at Argonne Tandem Linac Accelerator System (ATLAS), is being tested off-line. A unique property of the EBIS is a combination of short breeding times, high repetition rates, and a large acceptance. Overall, we have implemented many innovative features during the design and construction of the CARIBU EBIS as compared to the existing EBIS breeders. The off-line charge breeding tests are being performed using a surface ionization source that produces singly charged cesium ions. The main goal of the off-line commissioning is to demonstrate stable operation of the EBIS at a 10 Hz repetition rate and a breeding efficiency into single charge state higher than 15%. These goals have been successfully achieved and exceeded. We have measured (20% ± 0.7%) breeding efficiency into the single charge state of 28+ cesium ions with the breeding time of 28 ms. In general, the current CARIBU EBIS operational parameters can provide charge breeding of any ions in the full mass range of periodic table with high efficiency, short breeding times, and sufficiently low charge-to-mass ratio, 1/6.3 for the heaviest masses, for further acceleration in ATLAS. In this paper, we discuss the parameters of the EBIS and the charge breeding results in a pulsed injection mode with repetition rates up to 10 Hz.

  5. Reaction Rate Measurement at the Californium User Facility (CUF) for unfolding the neutron spectrum

    NASA Astrophysics Data System (ADS)

    Hannan, Mohammad; Ortega, Ruben

    2011-03-01

    Neutron Activation Analysis was used to determine Reaction Rate measurement of several activation detectors at the ORNL Californium User Facility (CUF). The irradiations were performed with 34 mg Cf 252 neutron source strength.. Ten source capsules > 34 mgwerepositionedconcentricallyaroundasamplecavity . Wehavedeterminedabsoluteactivityperatomof 9 detectors : Au 197 (n , γ) Au 198 , Al 27 (n , α) Na 24 , Al 27 (n , p) Mg 27 , Fe 56 (n , p) Mn 5 , Fe 54 (n , p) Mn 54 , In 115 (n , γ) In 116 , Ti 46 (n , p) Sc 46 , Ni 60 (n , p) Co 60 , Fe 58 (n , γ) Fe 59 . Theerrorsarewithin 1.5 - 8 60 and Fe 58 have errors of 46% and 32 %. These high errors may be attributed to the counting statistics. These reaction rate values will be used to unfold the neutron spectrum of the CUF using the MAXED 2000, a computer code for the de convolution of multi sphere neutron spectrometer data and the results are discussed. The authors acknowledge help, advise, and using facility at ORNL-CUF to Dr. Rodger martin and Mr. David C. Galsgow.

  6. Fast and efficient charge breeding of the Californium rare isotope breeder upgrade electron beam ion source.

    PubMed

    Ostroumov, P N; Barcikowski, A; Dickerson, C A; Perry, A; Pikin, A I; Sharamentov, S I; Vondrasek, R C; Zinkann, G P

    2015-08-01

    The Electron Beam Ion Source (EBIS), developed to breed Californium Rare Isotope Breeder Upgrade (CARIBU) radioactive beams at Argonne Tandem Linac Accelerator System (ATLAS), is being tested off-line. A unique property of the EBIS is a combination of short breeding times, high repetition rates, and a large acceptance. Overall, we have implemented many innovative features during the design and construction of the CARIBU EBIS as compared to the existing EBIS breeders. The off-line charge breeding tests are being performed using a surface ionization source that produces singly charged cesium ions. The main goal of the off-line commissioning is to demonstrate stable operation of the EBIS at a 10 Hz repetition rate and a breeding efficiency into single charge state higher than 15%. These goals have been successfully achieved and exceeded. We have measured (20% ± 0.7%) breeding efficiency into the single charge state of 28+ cesium ions with the breeding time of 28 ms. In general, the current CARIBU EBIS operational parameters can provide charge breeding of any ions in the full mass range of periodic table with high efficiency, short breeding times, and sufficiently low charge-to-mass ratio, 1/6.3 for the heaviest masses, for further acceleration in ATLAS. In this paper, we discuss the parameters of the EBIS and the charge breeding results in a pulsed injection mode with repetition rates up to 10 Hz.

  7. Fast and efficient charge breeding of the Californium rare isotope breeder upgrade electron beam ion source

    DOE PAGES

    Ostroumov, P. N.; Barcikowski, A.; Dickerson, C. A.; ...

    2015-08-28

    The Electron Beam Ion Source (EBIS), developed to breed Californium Rare Isotope Breeder Upgrade (CARIBU) radioactive beams at Argonne Tandem Linac Accelerator System (ATLAS), is being tested off-line. A unique property of the EBIS is a combination of short breeding times, high repetition rates, and a large acceptance. Overall, we have implemented many innovative features during the design and construction of the CARIBU EBIS as compared to the existing EBIS breeders. The off-line charge breeding tests are being performed using a surface ionization source that produces singly charged cesium ions. The main goal of the off-line commissioning is to demonstratemore » stable operation of the EBIS at a 10 Hz repetition rate and a breeding efficiency into single charge state higher than 15%. These goals have been successfully achieved and exceeded. We have measured (20% ± 0.7%) breeding efficiency into the single charge state of 28+ cesium ions with the breeding time of 28 ms. In general, the current CARIBU EBIS operational parameters can provide charge breeding of any ions in the full mass range of periodic table with high efficiency, short breeding times, and sufficiently low charge-to-mass ratio, 1/6.3 for the heaviest masses, for further acceleration in ATLAS. In this study, we discuss the parameters of the EBIS and the charge breeding results in a pulsed injection mode with repetition rates up to 10 Hz.« less

  8. Fast and efficient charge breeding of the Californium rare isotope breeder upgrade electron beam ion source

    SciTech Connect

    Ostroumov, P. N. Barcikowski, A.; Dickerson, C. A.; Perry, A.; Sharamentov, S. I.; Vondrasek, R. C.; Zinkann, G. P.; Pikin, A. I.

    2015-08-15

    The Electron Beam Ion Source (EBIS), developed to breed Californium Rare Isotope Breeder Upgrade (CARIBU) radioactive beams at Argonne Tandem Linac Accelerator System (ATLAS), is being tested off-line. A unique property of the EBIS is a combination of short breeding times, high repetition rates, and a large acceptance. Overall, we have implemented many innovative features during the design and construction of the CARIBU EBIS as compared to the existing EBIS breeders. The off-line charge breeding tests are being performed using a surface ionization source that produces singly charged cesium ions. The main goal of the off-line commissioning is to demonstrate stable operation of the EBIS at a 10 Hz repetition rate and a breeding efficiency into single charge state higher than 15%. These goals have been successfully achieved and exceeded. We have measured (20% ± 0.7%) breeding efficiency into the single charge state of 28+ cesium ions with the breeding time of 28 ms. In general, the current CARIBU EBIS operational parameters can provide charge breeding of any ions in the full mass range of periodic table with high efficiency, short breeding times, and sufficiently low charge-to-mass ratio, 1/6.3 for the heaviest masses, for further acceleration in ATLAS. In this paper, we discuss the parameters of the EBIS and the charge breeding results in a pulsed injection mode with repetition rates up to 10 Hz.

  9. Neutron activation analysis at the Californium User Facility for Neutron Science

    SciTech Connect

    Martin, R.C.; Smith, E.H.; Glasgow, D.C.; Jerde, E.A.; Marsh, D.L.; Zhao, L.

    1997-12-01

    The Californium User Facility (CUF) for Neutron Science has been established to provide {sup 252}Cf-based neutron irradiation services and research capabilities including neutron activation analysis (NAA). A major advantage of the CUF is its accessibility and controlled experimental conditions compared with those of a reactor environment The CUF maintains the world`s largest inventory of compact {sup 252}Cf neutron sources. Neutron source intensities of {le} 10{sup 11} neutrons/s are available for irradiations within a contamination-free hot cell, capable of providing thermal and fast neutron fluxes exceeding 10{sup 8} cm{sup {minus}2} s{sup {minus}1} at the sample. Total flux of {ge}10{sup 9} cm{sup {minus}2} s{sup {minus}1} is feasible for large-volume irradiation rabbits within the {sup 252}Cf storage pool. Neutron and gamma transport calculations have been performed using the Monte Carlo transport code MCNP to estimate irradiation fluxes available for sample activation within the hot cell and storage pool and to design and optimize a prompt gamma NAA (PGNAA) configuration for large sample volumes. Confirmatory NAA irradiations have been performed within the pool. Gamma spectroscopy capabilities including PGNAA are being established within the CUF for sample analysis.

  10. Fast and efficient charge breeding of the Californium rare isotope breeder upgrade electron beam ion source

    SciTech Connect

    Ostroumov, P. N.; Barcikowski, A.; Dickerson, C. A.; Perry, A.; Pikin, A. I.; Sharamentov, S. I.; Vondrasek, R. C.; Zinkann, G. P.

    2015-08-28

    The Electron Beam Ion Source (EBIS), developed to breed Californium Rare Isotope Breeder Upgrade (CARIBU) radioactive beams at Argonne Tandem Linac Accelerator System (ATLAS), is being tested off-line. A unique property of the EBIS is a combination of short breeding times, high repetition rates, and a large acceptance. Overall, we have implemented many innovative features during the design and construction of the CARIBU EBIS as compared to the existing EBIS breeders. The off-line charge breeding tests are being performed using a surface ionization source that produces singly charged cesium ions. The main goal of the off-line commissioning is to demonstrate stable operation of the EBIS at a 10 Hz repetition rate and a breeding efficiency into single charge state higher than 15%. These goals have been successfully achieved and exceeded. We have measured (20% ± 0.7%) breeding efficiency into the single charge state of 28+ cesium ions with the breeding time of 28 ms. In general, the current CARIBU EBIS operational parameters can provide charge breeding of any ions in the full mass range of periodic table with high efficiency, short breeding times, and sufficiently low charge-to-mass ratio, 1/6.3 for the heaviest masses, for further acceleration in ATLAS. In this study, we discuss the parameters of the EBIS and the charge breeding results in a pulsed injection mode with repetition rates up to 10 Hz.

  11. Nuclear Data Sheets for A = 239

    DOE PAGES

    Browne, E.; Tuli, J. K.

    2014-11-18

    Spectroscopic data and level schemes from radioactive decay and nuclear reaction studies are presented here for all nuclei with mass number A=239. In general, a relatively small amount of new data on this mass chain has been reported since the previous evaluation in 2003. However, special evaluations, such as ''Database of prompt gamma rays from slow neutron–capture from elemental analysis'' (2007ChZX), have provided additional precise data for levels in 29U. Also, new Coulomb excitation measurements in 239Pu have extended the knowledge of the 1/2[631] rotational band up to Jπ=(55/2+)Jπ=(55/2+), and that of the octupole vibrational band up to Jπ=(53/2-)Jπ=(53/2-). Formore » historical knowledge it is worth mentioning the report on the “Discovery of isotopes of the transuranium elements with 93 <= Z <= 98'' (2013Fr02), where the information for elements Np, Pu, Am, and Cf with mass number A=239 is presented. The alpha hindrance factors (HF) presented in this evaluation were calculated using values of the radius parameter (r0) interpolated from those for even–even adjacent nuclei given by 1998Ak04.« less

  12. Nuclear Data Sheets for A = 239

    SciTech Connect

    Browne, E.; Tuli, J. K.

    2014-11-18

    Spectroscopic data and level schemes from radioactive decay and nuclear reaction studies are presented here for all nuclei with mass number A=239. In general, a relatively small amount of new data on this mass chain has been reported since the previous evaluation in 2003. However, special evaluations, such as ''Database of prompt gamma rays from slow neutron–capture from elemental analysis'' (2007ChZX), have provided additional precise data for levels in 29U. Also, new Coulomb excitation measurements in 239Pu have extended the knowledge of the 1/2[631] rotational band up to Jπ=(55/2+)Jπ=(55/2+), and that of the octupole vibrational band up to Jπ=(53/2-)Jπ=(53/2-). For historical knowledge it is worth mentioning the report on the “Discovery of isotopes of the transuranium elements with 93 <= Z <= 98'' (2013Fr02), where the information for elements Np, Pu, Am, and Cf with mass number A=239 is presented. The alpha hindrance factors (HF) presented in this evaluation were calculated using values of the radius parameter (r0) interpolated from those for even–even adjacent nuclei given by 1998Ak04.

  13. 46 CFR 108.239 - Fuel transfer equipment.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Fuel transfer equipment. 108.239 Section 108.239... AND EQUIPMENT Construction and Arrangement Helicopter Facilities § 108.239 Fuel transfer equipment. (a... static grounding device. (d) Each electric fuel transfer pump must have a control with a fuel...

  14. 16 CFR 239.5 - Performance of warranties or guarantees.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Performance of warranties or guarantees. 239.5 Section 239.5 Commercial Practices FEDERAL TRADE COMMISSION GUIDES AND TRADE PRACTICE RULES GUIDES FOR THE ADVERTISING OF WARRANTIES AND GUARANTEES § 239.5 Performance of warranties or guarantees....

  15. 46 CFR 153.239 - Use of cast iron.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Use of cast iron. 153.239 Section 153.239 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK... Systems § 153.239 Use of cast iron. (a) Cast iron used in a cargo containment system must meet the...

  16. 46 CFR 153.239 - Use of cast iron.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Use of cast iron. 153.239 Section 153.239 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK... Systems § 153.239 Use of cast iron. (a) Cast iron used in a cargo containment system must meet the...

  17. 46 CFR 153.239 - Use of cast iron.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Use of cast iron. 153.239 Section 153.239 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK... Systems § 153.239 Use of cast iron. (a) Cast iron used in a cargo containment system must meet the...

  18. 46 CFR 153.239 - Use of cast iron.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Use of cast iron. 153.239 Section 153.239 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK... Systems § 153.239 Use of cast iron. (a) Cast iron used in a cargo containment system must meet the...

  19. 46 CFR 153.239 - Use of cast iron.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Use of cast iron. 153.239 Section 153.239 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK... Systems § 153.239 Use of cast iron. (a) Cast iron used in a cargo containment system must meet the...

  20. 49 CFR 239.9 - Responsibility for compliance.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Responsibility for compliance. 239.9 Section 239.9 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.9 Responsibility for...

  1. 49 CFR 239.9 - Responsibility for compliance.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Responsibility for compliance. 239.9 Section 239.9 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.9 Responsibility for...

  2. 49 CFR 239.9 - Responsibility for compliance.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Responsibility for compliance. 239.9 Section 239.9 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.9 Responsibility for...

  3. 40 CFR 239.5 - State legal certification.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false State legal certification. 239.5 Section 239.5 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES REQUIREMENTS FOR STATE PERMIT PROGRAM DETERMINATION OF ADEQUACY State Program Application § 239.5 State legal...

  4. 48 CFR 239.7405 - Delegated authority for telecommunications resources.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... telecommunications resources. 239.7405 Section 239.7405 Federal Acquisition Regulations System DEFENSE ACQUISITION... TECHNOLOGY Telecommunications Services 239.7405 Delegated authority for telecommunications resources. The contracting officer may enter into a telecommunications service contract on a month-to-month basis or for...

  5. 48 CFR 2452.239-71 - Information Technology Virus Security.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Virus Security. 2452.239-71 Section 2452.239-71 Federal Acquisition Regulations System DEPARTMENT OF... Provisions and Clauses 2452.239-71 Information Technology Virus Security. As prescribed in 2439.107(b), insert the following clause: Information Technology Virus Security (FEB 2006) (a) The contractor hereby...

  6. 48 CFR 2452.239-71 - Information Technology Virus Security.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Virus Security. 2452.239-71 Section 2452.239-71 Federal Acquisition Regulations System DEPARTMENT OF... Provisions and Clauses 2452.239-71 Information Technology Virus Security. As prescribed in 2439.107(b), insert the following clause: Information Technology Virus Security (FEB 2006) (a) The contractor hereby...

  7. 48 CFR 2452.239-71 - Information Technology Virus Security.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Virus Security. 2452.239-71 Section 2452.239-71 Federal Acquisition Regulations System DEPARTMENT OF... Provisions and Clauses 2452.239-71 Information Technology Virus Security. As prescribed in 2439.107(b), insert the following clause: Information Technology Virus Security (FEB 2006) (a) The contractor hereby...

  8. 33 CFR 110.239 - Island of Tinian, CNMI.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Island of Tinian, CNMI. 110.239 Section 110.239 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Anchorage Grounds § 110.239 Island of Tinian, CNMI. (a) The anchorage grounds (based...

  9. 33 CFR 110.239 - Island of Tinian, CNMI.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Island of Tinian, CNMI. 110.239 Section 110.239 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Anchorage Grounds § 110.239 Island of Tinian, CNMI. (a) The anchorage grounds (based...

  10. 33 CFR 110.239 - Island of Tinian, CNMI.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Island of Tinian, CNMI. 110.239 Section 110.239 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Anchorage Grounds § 110.239 Island of Tinian, CNMI. (a) The anchorage grounds (based...

  11. 33 CFR 110.239 - Island of Tinian, CNMI.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Island of Tinian, CNMI. 110.239 Section 110.239 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Anchorage Grounds § 110.239 Island of Tinian, CNMI. (a) The anchorage grounds (based...

  12. 33 CFR 110.239 - Island of Tinian, CNMI.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Island of Tinian, CNMI. 110.239 Section 110.239 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Anchorage Grounds § 110.239 Island of Tinian, CNMI. (a) The anchorage grounds (based...

  13. 46 CFR 108.239 - Fuel transfer equipment.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Fuel transfer equipment. 108.239 Section 108.239... AND EQUIPMENT Construction and Arrangement Helicopter Facilities § 108.239 Fuel transfer equipment. (a... static grounding device. (d) Each electric fuel transfer pump must have a control with a fuel transfer...

  14. 32 CFR 239.15. - List of HAP Field Offices.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 32 National Defense 2 2013-07-01 2013-07-01 false List of HAP Field Offices. 239.15. Section 239...) MISCELLANEOUS HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.15. List of HAP Field Offices. HAP FIELD OFFICE U.S. Army Engineer District, Savannah, Corps of Engineers, Attn: CESAS-RE-HM, 100...

  15. 32 CFR 239.15 - List of HAP field offices.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 32 National Defense 2 2011-07-01 2011-07-01 false List of HAP field offices. 239.15 Section 239.15 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) MISCELLANEOUS HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.15 List of HAP field offices....

  16. 32 CFR 239.15. - List of HAP Field Offices.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 32 National Defense 2 2014-07-01 2014-07-01 false List of HAP Field Offices. 239.15. Section 239...) MISCELLANEOUS HOMEOWNERS ASSISTANCE PROGRAM-APPLICATION PROCESSING § 239.15. List of HAP Field Offices. HAP FIELD OFFICE U.S. Army Engineer District, Savannah, Corps of Engineers, Attn: CESAS-RE-HM, 100...

  17. 48 CFR 239.7405 - Delegated authority for telecommunications resources.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Delegated authority for telecommunications resources. 239.7405 Section 239.7405 Federal Acquisition Regulations System DEFENSE ACQUISITION... TECHNOLOGY Telecommunications Services 239.7405 Delegated authority for telecommunications resources....

  18. 48 CFR 239.7405 - Delegated authority for telecommunications resources.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Delegated authority for telecommunications resources. 239.7405 Section 239.7405 Federal Acquisition Regulations System DEFENSE ACQUISITION... TECHNOLOGY Telecommunications Services 239.7405 Delegated authority for telecommunications resources....

  19. 48 CFR 239.7405 - Delegated authority for telecommunications resources.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Delegated authority for telecommunications resources. 239.7405 Section 239.7405 Federal Acquisition Regulations System DEFENSE ACQUISITION... TECHNOLOGY Telecommunications Services 239.7405 Delegated authority for telecommunications resources....

  20. 12 CFR 239.59 - Offers and sales of stock.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 4 2013-01-01 2013-01-01 false Offers and sales of stock. 239.59 Section 239... SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Conversions From Mutual to Stock Form § 239.59 Offers and sales of stock. (a) Purchase priorities. The mutual holding company must offer to...

  1. 12 CFR 239.59 - Offers and sales of stock.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 4 2014-01-01 2014-01-01 false Offers and sales of stock. 239.59 Section 239... SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Conversions From Mutual to Stock Form § 239.59 Offers and sales of stock. (a) Purchase priorities. The mutual holding company must offer to...

  2. 12 CFR 239.59 - Offers and sales of stock.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 4 2012-01-01 2012-01-01 false Offers and sales of stock. 239.59 Section 239... SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Conversions from Mutual to Stock Form § 239.59 Offers and sales of stock. (a) Purchase priorities. The mutual holding company must offer to...

  3. 47 CFR 73.239 - Use of common antenna site.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 4 2014-10-01 2014-10-01 false Use of common antenna site. 73.239 Section 73.239 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES FM Broadcast Stations § 73.239 Use of common antenna site. No FM broadcast...

  4. 47 CFR 73.239 - Use of common antenna site.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 4 2013-10-01 2013-10-01 false Use of common antenna site. 73.239 Section 73.239 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES FM Broadcast Stations § 73.239 Use of common antenna site. No FM broadcast...

  5. 47 CFR 73.239 - Use of common antenna site.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 4 2011-10-01 2011-10-01 false Use of common antenna site. 73.239 Section 73.239 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES FM Broadcast Stations § 73.239 Use of common antenna site. No FM broadcast...

  6. 47 CFR 73.239 - Use of common antenna site.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 4 2012-10-01 2012-10-01 false Use of common antenna site. 73.239 Section 73.239 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES FM Broadcast Stations § 73.239 Use of common antenna site. No FM broadcast...

  7. 47 CFR 73.239 - Use of common antenna site.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Use of common antenna site. 73.239 Section 73.239 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES FM Broadcast Stations § 73.239 Use of common antenna site. No FM broadcast...

  8. 46 CFR 108.239 - Fuel transfer equipment.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... to contain fuel spills or leaks. (g) Each hose must meet chapter 3 “Aircraft Fueling Hose” of... 46 Shipping 4 2011-10-01 2011-10-01 false Fuel transfer equipment. 108.239 Section 108.239... AND EQUIPMENT Construction and Arrangement Helicopter Facilities § 108.239 Fuel transfer equipment. (a...

  9. 46 CFR 108.239 - Fuel transfer equipment.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Fuel transfer equipment. 108.239 Section 108.239 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Construction and Arrangement Helicopter Facilities § 108.239 Fuel transfer equipment. (a...

  10. 33 CFR 117.239 - Lewes and Rehoboth Canal.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Lewes and Rehoboth Canal. 117.239 Section 117.239 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Delaware § 117.239 Lewes and Rehoboth Canal. (a) The draw of the Savannah Road/SR 18...

  11. Clinical report on external irradiation combined with californium-252 neutron intraluminal brachytherapy for cervical carcinoma treatment.

    PubMed

    Zhao, Huanyu; Wang, Keming; Sun, Jian; Geng, Xin; Zhang, Weiming

    2007-01-01

    Neutron rays produce high linear energy transfer radiation, which has particular radiobiological characteristics. The aim of the study was to observe the curative effects and complications of external irradiation combined with californium-252 (252Cf) neutron intraluminal brachytherapy for treatment of cervical carcinoma. From December 2000 to December 2004, 128 cases of cervical carcinoma staged IIA to IIIB were treated with 252Cf neutron intraluminal brachytherapy using 8-10 Gy-eq per fraction, once a week. The total dose at reference point A was 36-40 Gy-eq in 4 to 5 fractions. From the second day after 252Cf neutron intraluminal brachytherapy, the whole pelvic cavity was treated with 6 MV X-ray external irradiation, applying 2 Gy per fraction 4 times per week. After 20-24 Gy of external irradiation, the center of the whole pelvic field was blocked with a 4-cm-wide lead shield; the total dose of external irradiation was 44-50 Gy. The short-term curative effects were 95.3% complete remissions and 4.7% partial remissions. The 3-year and 5-year local control rates were 93.5% and 87.9%, respectively. The 3-year and 5-year survival rates were 87.5% and 70%, respectively. The rates of radiation complications were 4.7% for radiation cystitis, 7.8% for radiation proctitis, 6.3% for vaginal contracture and adhesion, and 5.5% for protracted radiation proctitis. The results of univariate and multivariate analysis indicated that differentiation of tumor cells and lymphatic metastasis are the main factors related to the clinical prognosis of cervical carcinoma. A combination of external irradiation with 252Cf neutron intraluminal brachytherapy for treatment of cervical carcinoma can be well tolerated by patients. The rate of local tumor control is high and radiation complications are few.

  12. [The preliminary report of cervical cancer treated with californium-252 neutron after loading intracavitary radiotherapy].

    PubMed

    Luo, G; Zheng, C; Shan, J

    2001-12-01

    To observe the therapeutic effectiveness and complications of californium-252 (252Cf) brachytherapy in cervical cancer. Fifty one cases of cervical cancer were diagnosed according to the standard of the International Federation of Gynecology and Obstetrics (FIGO), II a:8 cases, II b:31 cases, III a:8 cases, III b:4 cases. Treatment schedule: 252Cf after loading brachytherapy, 10-12 Gy/fraction/week, the total dose of reference point A was 36-40 Gy in three to four implant sessions. In the second day after 252Cf therapy, the whole pelvis was treated with 6 MV X-ray external beam radiotherapy, 200 cGy per fraction, 4 times per week. The total dose of external beam radiotherapy was 40 to 50 Gy (the middle of pelvis was blocked at width of 4 cm after 20-30 Gy), then the total dose of reference point B was 50-55 Gy;the total treatment time was 5-6 weeks. The average time of complete tumor regression was 25 days, the local control rate of 2 year was 100%, the total 2 year survival rate was 92%, i.e., II a: 8/8 cases, II b: 30/31 cases (97%), III a: 6/8 cases, III b: 3/4 cases; the late radiation complications of bladder and rectum was 2% respectively during these 2 years. It is concluded that combined 252 Cf brachytherapy and high energy X-ray external beam radiotherapy may be safe and effective in the management of cervical cancer. 252Cf has advantages of high local control rate; rapidly regression of bulky tumors and low-grade radiation complications.

  13. (239)Pu fallout across continental Australia: Implications on (239)Pu use as a soil tracer.

    PubMed

    Lal, R; Fifield, L K; Tims, S G; Wasson, R J

    2017-09-19

    At present there is a need for the development of new radioisotopes for soil erosion and sediment tracing especially as fallout (137)Cs levels become depleted. Recent studies have shown that (239)Pu can be a useful new soil erosion and sediment radioisotope tracer. (239)Pu was released in the major atmospheric nuclear weapons tests of 1950's and 1960's. However (239)Pu has a half-life of 24110 years and more than 99% of this isotope is still present in the environment today. In contrast (137)Cs with a half-life of 30.07 year has decayed to <35% of initially deposited activities and this isotope will become increasingly difficult to measure in the coming decades especially in the southern hemisphere, which received only about a third of the total global fallout from the atmospheric tests (UNSCEAR, 2000). In this study an assessment of the (239)Pu fallout in Australia was carried out from comparison of measured (239)Pu inventories with expected (239)Pu inventories from fallout models. (239)Pu inventories were also compared with rainfall and measured (240)Pu/(239)Pu ratios across Australia. (239)Pu fallout inventories ranged from 430 to 1461 μB/cm(2). Central Australia, with fallout 107% in excess of expected values, seems to be strongly impacted by local fallout deposition. In comparison other sites typically show 5-40% variation between expected and measured fallout values. The fallout inventories were found to weakly correlate (using power functions, y = ax(b)) with rainfall with r(2) = 0.50 across the southern catchments (25-40°S latitude band). Across the northern catchments (10-25°S latitude band) fallout showed greater variability with rainfall with r(2) = 0.24. Central Australia and Alice Springs which seem to be strongly impacted by local fallout are excluded from the rainfall correlation data (with these sites included r(2) = 0.08 and r(2) < 0.01 respectively). (240)Pu/(239)Pu atom ratios range from 0.045 to 0.197, with averages of 0

  14. Neutron Capture Cross Section of 239Pu

    NASA Astrophysics Data System (ADS)

    Mosby, S.; Arnold, C.; Bredeweg, T. A.; Chyzh, A.; Couture, A.; Henderson, R.; Jandel, M.; Kwan, E.; O'Donnell, J. M.; Rusev, G.; Ullmann, J. L.; Wu, C. Y.

    2014-05-01

    The Detector for Advanced Neutron Capture Experiments (DANCE) has been used to measure the 239Pu(n,γ) cross section from 10 eV to the keV region. Three experimental run conditions were used to characterize the prompt fission γ-ray spectrum across the entire energy regime, measure the cross section in the resolved resonance region, and obtain necessary count rate well into the keV region. The preliminary cross sections are in good agreement with current evaluations from 10 eV to 80 keV.

  15. Clinical assessment of 252Californium neutron intracavitary brachytherapy using a two-channel Y applicator combined with external beam radiotherapy for endometrial cancer

    PubMed Central

    Zhou, Qian; Cheng Tang; Zhao, Ke-Wei; Xiong, Yan-Li; Chen, Shu; Xu, Wen-Jing; Lei, Xin

    2016-01-01

    OBJECTIVE: The aim of this study was to determine the efficacy of 252Californium neutron intracavitary brachytherapy using a two-channel Y applicator combined with external beam radiotherapy for the treatment of endometrial cancer. METHODS: Thirty-one patients with stage I–III endometrial cancer were recruited for this study. The stage I patients received only 252Californium neutron intracavitary brachytherapy with a two-channel applicator. The stage II and III patients received both 252Californium neutron intracavitary brachytherapy using a two-channel applicator and parallel-opposed whole pelvic radiotherapy. RESULTS: The five-year local control rate was 80.6% (25/31), the overall survival rate was 51.6% (16/31), and the disease-free survival rate was 54.8% (17/31). The incidence of serious late complications was 12.9% (4/31). CONCLUSIONS: 252Californium neutron intracavitary brachytherapy using a two-channel applicator combined with external beam radiotherapy was effective for treating endometrial cancer and the incidence of serious late complications related to this combination was within an acceptable range. PMID:26872078

  16. Clinical assessment of 252Californium neutron intracavitary brachytherapy using a two-channel Y applicator combined with external beam radiotherapy for endometrial cancer.

    PubMed

    Zhou, Qian; Tang, Cheng; Zhao, Ke-Wei; Xiong, Yan-Li; Chen, Shu; Xu, Wen-Jing; Lei, Xin

    2016-01-01

    The aim of this study was to determine the efficacy of 252Californium neutron intracavitary brachytherapy using a two-channel Y applicator combined with external beam radiotherapy for the treatment of endometrial cancer. Thirty-one patients with stage I-III endometrial cancer were recruited for this study. The stage I patients received only 252Californium neutron intracavitary brachytherapy with a two-channel applicator. The stage II and III patients received both 252Californium neutron intracavitary brachytherapy using a two-channel applicator and parallel-opposed whole pelvic radiotherapy. The five-year local control rate was 80.6% (25/31), the overall survival rate was 51.6% (16/31), and the disease-free survival rate was 54.8% (17/31). The incidence of serious late complications was 12.9% (4/31). 252Californium neutron intracavitary brachytherapy using a two-channel applicator combined with external beam radiotherapy was effective for treating endometrial cancer and the incidence of serious late complications related to this combination was within an acceptable range.

  17. Divalent and trivalent gas-phase coordination complexes of californium: evaluating the stability of Cf(ii).

    PubMed

    Dau, Phuong D; Shuh, David K; Sturzbecher-Hoehne, Manuel; Abergel, Rebecca J; Gibson, John K

    2016-08-02

    The divalent oxidation state is increasingly stable relative to the trivalent state for the later actinide elements, with californium the first actinide to exhibit divalent chemistry under moderate conditions. Although there is evidence for divalent Cf in solution and solid compounds, there are no reports of discrete complexes in which Cf(II) is coordinated by anionic ligands. Described here is the divalent Cf methanesulfinate coordination complex, Cf(II)(CH3SO2)3(-), prepared in the gas phase by reductive elimination of CH3SO2 from Cf(III)(CH3SO2)4(-). Comparison with synthesis of the corresponding Sm and Cm complexes reveals reduction of Cf(III) and Sm(III), and no evidence for reduction of Cm(III). This reflects the comparative 3+/2+ reduction potentials: Cf(3+) (-1.60 V) ≈ Sm(3+) (-1.55 V) ≫ Cm(3+) (-3.7 V). Association of O2 to the divalent complexes is attributed to formation of superoxides, with recovery of the trivalent oxidation state. The new gas-phase chemistry of californium, now the heaviest element to have been studied in this manner, provides evidence for Cf(II) coordination complexes and similar chemistry of Cf and Sm.

  18. 48 CFR 239.7100 - Scope of subpart.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7100 Scope of subpart. This subpart includes information assurance...

  19. 48 CFR 239.7100 - Scope of subpart.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7100 Scope of subpart. This subpart includes information assurance...

  20. 48 CFR 239.7100 - Scope of subpart.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7100 Scope of subpart. This subpart includes information assurance...

  1. Determination of the gamma emission probabilities of 239Np

    NASA Astrophysics Data System (ADS)

    Jian-bo, Shang; li-li, Du; Tao, Bai; Yi-hua, Dai; Zhen-yuan, Zhong; Jie, Liu; Quan-lin, Shi

    2017-09-01

    239Np is an important nuclide as the decay daughter of 239U and it decays to 239Pu by emitting beta particles and gamma rays with a half life of 2.356 days. The data of the emission probabilities of its gamma-rays in the open references are consistent except for the main gamma-ray of 106.1 keV, the emission probability of which varies from 25.9% to 27.2%. To verify the emission probability of 106.1 keV gamma-ray of 239Np, a N-type coaxial HPGe detector was calibrated using 241Am, 133Ba, 60Co, 152Eu and 155Eu reference gamma sources to get the accurate efficiency of the 106.1 keV gamma-ray. 239Np was purified from solution containing 243Am, where 239Np is the alpha decay daughter of 243Am. The specific activity of 239Np solution was determined by a 4πβ (PC)-γ coincidence counting device. There were 6 gamma sources prepared to measure with the HPGe detector, and the activity of 239Np in each gamma source was calculated with the weights of the solution contained in it. The emission probability of 106.1 keV of 239Np is measured to be (25.4 ± 0.3)%, which is consistent with 25.34%, the value evaluated in 2014.

  2. Preparation of Pu{sup 239} sources

    SciTech Connect

    Holcomb, H.P.

    1988-08-05

    The Separations Technology Laboratory has prepared four sources to be used for calibrating a waste assay system (Passive/Active Neutron Assay) in Building 724-8G (Burial Ground). The four sources contain 0.5, 0.1, 0.05, and 0.01 grams Pu{sup 239}, respectively. The sources were prepared using aliquots from a single solution provided by the Quality Control (QC) group of Laboratories Department. The solution contained weapons-grade plutonium dissolved in nitric acid. Final solution acidity was 3M. Coulometry had been used to obtain a total plutonium content per unit volume. The weight percent of the plutonium isotopes present was obtained via mass spectrometry.

  3. Simulation and design of an electron beam ion source charge breeder for the californium rare isotope breeder upgrade

    NASA Astrophysics Data System (ADS)

    Dickerson, Clayton; Mustapha, Brahim; Pikin, Alexander; Kondrashev, Sergey; Ostroumov, Peter; Levand, Anthony; Fischer, Rick

    2013-02-01

    An electron beam ion source (EBIS) will be constructed and used to charge breed ions from the californium rare isotope breeder upgrade (CARIBU) for postacceleration into the Argonne tandem linear accelerator system (ATLAS). Simulations of the EBIS charge breeder performance and the related ion transport systems are reported. Propagation of the electron beam through the EBIS was verified, and the anticipated incident power density within the electron collector was identified. The full normalized acceptance of the charge breeder with a 2 A electron beam, 0.024πmmmrad for nominal operating parameters, was determined by simulating ion injection into the EBIS. The optics of the ion transport lines were carefully optimized to achieve well-matched ion injection, to minimize emittance growth of the injected and extracted ion beams, and to enable adequate testing of the charge bred ions prior to installation in ATLAS.

  4. Design, construction, and characterization of a facility for neutron capture gamma ray analysis of sulfur in coal using californium-252

    SciTech Connect

    Layfield, J.R.

    1980-03-01

    A study of neutron capture gamma ray analysis of sulfur in coal using californium-252 as a neutron source is reported. Both internal and external target geometries are investigated. The facility designed for and used in this study is described. The external target geometry is found to be inappropriate because of the low thermal neutron flux at the sample location, which must be outside the biological shielding. The internal target geometry is found to have a sufficient thermal neutron flux, but an excessive gamma ray background. A water filled plastic facility, rather than the paraffin filled steel one used in this study, is suggested as a means of increasing flexibility and decreasing the beackground in the internal target geometry.

  5. Beyond Californium-A Neutron Generator Alternative for Dosimetry and Instrument Calibration in the U.S.

    PubMed

    Piper, Roman K; Mozhayev, Andrey V; Murphy, Mark K; Thompson, Alan K

    2017-09-01

    Evaluations of neutron survey instruments, area monitors, and personal dosimeters rely on reference neutron radiations, which have evolved from the heavy reliance on (α,n) sources to a shared reliance on (α,n) and the spontaneous fission neutrons of californium-252 (Cf). Capable of producing high dose equivalent rates from an almost point source geometry, the characteristics of Cf are generally more favorable when compared to the use of (α,n) and (γ,n) sources or reactor-produced reference neutron radiations. Californium-252 is typically used in two standardized configurations: unmoderated, to yield a fission energy spectrum; or with the capsule placed within a heavy-water moderating sphere to produce a softened spectrum that is generally considered more appropriate for evaluating devices used in nuclear power plant work environments. The U.S. Department of Energy Cf Loan/Lease Program, a longtime origin of affordable Cf sources for research, testing and calibration, was terminated in 2009. Since then, high-activity sources have become increasingly cost-prohibitive for laboratories that formerly benefited from that program. Neutron generators, based on the D-T and D-D fusion reactions, have become economically competitive with Cf and are recognized internationally as important calibration and test standards. Researchers from the National Institute of Standards and Technology and the Pacific Northwest National Laboratory are jointly considering the practicality and technical challenges of implementing neutron generators as calibration standards in the U.S. This article reviews the characteristics of isotope-based neutron sources, possible isotope alternatives to Cf, and the rationale behind the increasing favor of electronically generated neutron options. The evaluation of a D-T system at PNNL has revealed characteristics that must be considered in adapting generators to the task of calibration and testing where accurate determination of a dosimetric quantity is

  6. Californium-252 Brachytherapy Combined With External-Beam Radiotherapy for Cervical Cancer: Long-Term Treatment Results

    SciTech Connect

    Lei Xin; Qian Chengyuan; Qing Yi; Zhao Kewei; Yang Zhengzhou; Dai Nan; Zhong Zhaoyang; Tang Cheng; Li Zheng; Gu Xianqing; Zhou Qian; Feng Yan; Xiong Yanli; Shan Jinlu; Wang Dong

    2011-12-01

    Purpose: To observe, by retrospective analysis, the curative effects and complications due to californium-252 ({sup 252}Cf) neutron intracavitary brachytherapy (ICBT) combined with external-beam radiotherapy (EBRT) in the treatment of cervical cancer. Methods and Materials: From February 1999 to December 2007, 696 patients with cervical cancer (Stages IB to IIIB) were treated with {sup 252}Cf-ICBT in combination of EBRT. Of all, 31 patients were at Stage IB, 104 at IIA, 363 at IIB, 64 at IIIA, and 134 at IIIB. Californium-252 ICBT was delivered at 7-12 Gy per insertion per week, with a total dose of 29-45 Gy to reference point A in three to five insertions. The whole pelvic cavity was treated with 8-MV X-ray external irradiation at 2 Gy per fraction, four times per week. After 16-38 Gy of external irradiation, the center of the whole pelvic field was blocked with a 4-cm-wide lead shield, with a total external irradiation dose of 44-56 Gy. The total treatment course was 5 to 6 weeks. Results: Overall survival rate at 3 and 5 years for all patients was 76.0% and 64.9%, respectively. Disease-free 3- and 5-year survival rates of patients were 71.2% and 58.4%, respectively. Late complications included vaginal contracture and adhesion, radiation proctitis, radiation cystitis, and inflammatory bowel, which accounted for 5.8%, 7.1%, 6.2%, and 4.9%, respectively. Univariate analysis results showed significant correlation of stage, age, histopathologic grade, and lymph node status with overall survival. Cox multiple regression analysis showed that the independent variables were stage, histopathologic grade, tumor size, and lymphatic metastasis in all patients. Conclusion: Results of this series suggest that the combined use of {sup 252}Cf-ICBT with EBRT is an effective method for treatment of cervical cancer.

  7. Californium-252 brachytherapy combined with external-beam radiotherapy for cervical cancer: long-term treatment results.

    PubMed

    Lei, Xin; Qian, Cheng-Yuan; Qing, Yi; Zhao, Ke-Wei; Yang, Zheng-Zhou; Dai, Nan; Zhong, Zhao-Yang; Tang, Cheng; Li, Zheng; Gu, Xian-Qing; Zhou, Qian; Feng, Yan; Xiong, Yan-Li; Shan, Jin-Lu; Wang, Dong

    2011-12-01

    To observe, by retrospective analysis, the curative effects and complications due to californium-252 (252Cf) neutron intracavitary brachytherapy (ICBT) combined with external-beam radiotherapy (EBRT) in the treatment of cervical cancer. From February 1999 to December 2007, 696 patients with cervical cancer (Stages IB to IIIB) were treated with 252Cf-ICBT in combination of EBRT. Of all, 31 patients were at Stage IB, 104 at IIA, 363 at IIB, 64 at IIIA, and 134 at IIIB. Californium-252 ICBT was delivered at 7-12 Gy per insertion per week, with a total dose of 29-45 Gy to reference point A in three to five insertions. The whole pelvic cavity was treated with 8-MV X-ray external irradiation at 2 Gy per fraction, four times per week. After 16-38 Gy of external irradiation, the center of the whole pelvic field was blocked with a 4-cm-wide lead shield, with a total external irradiation dose of 44-56 Gy. The total treatment course was 5 to 6 weeks. Overall survival rate at 3 and 5 years for all patients was 76.0% and 64.9%, respectively. Disease-free 3- and 5-year survival rates of patients were 71.2% and 58.4%, respectively. Late complications included vaginal contracture and adhesion, radiation proctitis, radiation cystitis, and inflammatory bowel, which accounted for 5.8%, 7.1%, 6.2%, and 4.9%, respectively. Univariate analysis results showed significant correlation of stage, age, histopathologic grade, and lymph node status with overall survival. Cox multiple regression analysis showed that the independent variables were stage, histopathologic grade, tumor size, and lymphatic metastasis in all patients. Results of this series suggest that the combined use of 252Cf-ICBT with EBRT is an effective method for treatment of cervical cancer. Copyright © 2011 Elsevier Inc. All rights reserved.

  8. 12 CFR 239.25 - Contents of Stock Issuance Plans.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 4 2014-01-01 2014-01-01 false Contents of Stock Issuance Plans. 239.25... RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Subsidiary Holding Companies § 239.25... benefit plans (collectively, ESOPs) must not encompass, in the aggregate, more than either 4.9 percent...

  9. 12 CFR 239.25 - Contents of Stock Issuance Plans.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 4 2013-01-01 2013-01-01 false Contents of Stock Issuance Plans. 239.25... RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Subsidiary Holding Companies § 239.25... benefit plans (collectively, ESOPs) must not encompass, in the aggregate, more than either 4.9 percent...

  10. 12 CFR 239.25 - Contents of Stock Issuance Plans.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 4 2012-01-01 2012-01-01 false Contents of Stock Issuance Plans. 239.25... RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Subsidiary Holding Companies § 239.25... benefit plans (collectively, ESOPs) must not encompass, in the aggregate, more than either 4.9 percent...

  11. 50 CFR 23.9 - Incorporation by reference.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 50 Wildlife and Fisheries 9 2014-10-01 2014-10-01 false Incorporation by reference. 23.9 Section 23.9 Wildlife and Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR..., Montreal, Quebec, Canada H4Z 1M1, 1-800-716-6326, http://www.iata.org. (1) Live Animals Regulations (LAR...

  12. 40 CFR 86.238-94-86.239-94 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 18 2010-07-01 2010-07-01 false 86.238-94-86.239-94 Section 86.238-94-86.239-94 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS... 1994 and Later Model Year Gasoline-Fueled New Light-Duty Vehicles, New Light-Duty Trucks and New Medium...

  13. 5 CFR 532.239 - Review by the lead agency.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Review by the lead agency. 532.239... PREVAILING RATE SYSTEMS Prevailing Rate Determinations § 532.239 Review by the lead agency. (a) The lead... wage data collection forms. (b) The lead agency shall determine whether the usable data collected in...

  14. 46 CFR 67.239 - Requirements for assumptions of mortgages.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 2 2010-10-01 2010-10-01 false Requirements for assumptions of mortgages. 67.239... MEASUREMENT OF VESSELS DOCUMENTATION OF VESSELS Filing and Recording of Instruments-Mortgages, Preferred Mortgages, and Related Instruments § 67.239 Requirements for assumptions of mortgages. An assumption of...

  15. 46 CFR 67.239 - Requirements for assumptions of mortgages.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 2 2011-10-01 2011-10-01 false Requirements for assumptions of mortgages. 67.239... MEASUREMENT OF VESSELS DOCUMENTATION OF VESSELS Filing and Recording of Instruments-Mortgages, Preferred Mortgages, and Related Instruments § 67.239 Requirements for assumptions of mortgages. An assumption of...

  16. 48 CFR 1352.239-70 - Software license addendum.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 5 2011-10-01 2011-10-01 false Software license addendum. 1352.239-70 Section 1352.239-70 Federal Acquisition Regulations System DEPARTMENT OF COMMERCE CLAUSES... Software license addendum. As prescribed in 48 CFR 1339.107, insert the following clause: Software...

  17. 48 CFR 352.239-71 - Standard for encryption language.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... language. 352.239-71 Section 352.239-71 Federal Acquisition Regulations System HEALTH AND HUMAN SERVICES... Representative. (c) The Contractor shall use the Key Management Key (see FIPS 201, Chapter 4, as amended) on the... Contractor's property management/control system or establish a separate procedure to account for all laptop...

  18. 12 CFR 239.3 - Mutual holding company reorganizations.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 4 2014-01-01 2014-01-01 false Mutual holding company reorganizations. 239.3... RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239.3 Mutual holding company reorganizations. (a) A mutual savings association may not reorganize to become...

  19. 12 CFR 239.11 - Subsidiary holding companies.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 4 2014-01-01 2014-01-01 false Subsidiary holding companies. 239.11 Section... SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239.11 Subsidiary holding companies. (a) Subsidiary holding companies. A mutual holding company may establish a...

  20. 12 CFR 239.3 - Mutual holding company reorganizations.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 4 2013-01-01 2013-01-01 false Mutual holding company reorganizations. 239.3... RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239.3 Mutual holding company reorganizations. (a) A mutual savings association may not reorganize to become...

  1. 12 CFR 239.11 - Subsidiary holding companies.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 4 2013-01-01 2013-01-01 false Subsidiary holding companies. 239.11 Section... SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239.11 Subsidiary holding companies. (a) Subsidiary holding companies. A mutual holding company may establish a...

  2. 12 CFR 239.3 - Mutual holding company reorganizations.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 4 2012-01-01 2012-01-01 false Mutual holding company reorganizations. 239.3... RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239.3 Mutual holding company reorganizations. (a) A mutual savings association may not reorganize to become...

  3. 12 CFR 239.11 - Subsidiary holding companies.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 4 2012-01-01 2012-01-01 false Subsidiary holding companies. 239.11 Section... SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239.11 Subsidiary holding companies. (a) Subsidiary holding companies. A mutual holding company may establish a...

  4. 48 CFR 1352.239-70 - Software license addendum.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Software license addendum. 1352.239-70 Section 1352.239-70 Federal Acquisition Regulations System DEPARTMENT OF COMMERCE CLAUSES... Software license addendum. As prescribed in 48 CFR 1339.107, insert the following clause: Software...

  5. 40 CFR 180.239 - Phosphamidon; tolerances for residues.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 25 2012-07-01 2012-07-01 false Phosphamidon; tolerances for residues. 180.239 Section 180.239 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS TOLERANCES AND EXEMPTIONS FOR PESTICIDE CHEMICAL RESIDUES IN FOOD Specific Tolerances...

  6. 40 CFR 180.239 - Phosphamidon; tolerances for residues.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 24 2011-07-01 2011-07-01 false Phosphamidon; tolerances for residues. 180.239 Section 180.239 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS TOLERANCES AND EXEMPTIONS FOR PESTICIDE CHEMICAL RESIDUES IN FOOD Specific Tolerances...

  7. 48 CFR 1352.239-71 - Electronic and information technology.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... technology. 1352.239-71 Section 1352.239-71 Federal Acquisition Regulations System DEPARTMENT OF COMMERCE... Electronic and information technology. As prescribed in 48 CFR 1339.270(a), insert the following provision: Electronic and Information Technology (APR 2010) (a) To be considered eligible for award, offerors...

  8. 48 CFR 1552.239-70 - Rehabilitation act notice.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 6 2010-10-01 2010-10-01 true Rehabilitation act notice. 1552.239-70 Section 1552.239-70 Federal Acquisition Regulations System ENVIRONMENTAL PROTECTION AGENCY... substantially to the language of this clause, including this paragraph, unless otherwise authorized by the...

  9. 48 CFR 252.239-7006 - Tariff information.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Tariff information. 252... Provisions And Clauses 252.239-7006 Tariff information. As prescribed in 239.7411(a), use the following clause: Tariff Information (JUL 1997) (a) The Contractor shall provide to the Contracting Officer— (1...

  10. 40 CFR 239.3 - Components of program application.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ....3 Section 239.3 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES REQUIREMENTS FOR STATE PERMIT PROGRAM DETERMINATION OF ADEQUACY State Program Application § 239.3 Components of program application. Any state that seeks a determination of adequacy under this part must submit an...

  11. 5 CFR 532.239 - Review by the lead agency.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 5 Administrative Personnel 1 2012-01-01 2012-01-01 false Review by the lead agency. 532.239... PREVAILING RATE SYSTEMS Prevailing Rate Determinations § 532.239 Review by the lead agency. (a) The lead... wage data collection forms. (b) The lead agency shall determine whether the usable data collected...

  12. 5 CFR 532.239 - Review by the lead agency.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 5 Administrative Personnel 1 2014-01-01 2014-01-01 false Review by the lead agency. 532.239... PREVAILING RATE SYSTEMS Prevailing Rate Determinations § 532.239 Review by the lead agency. (a) The lead... wage data collection forms. (b) The lead agency shall determine whether the usable data collected...

  13. 5 CFR 532.239 - Review by the lead agency.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 5 Administrative Personnel 1 2013-01-01 2013-01-01 false Review by the lead agency. 532.239... PREVAILING RATE SYSTEMS Prevailing Rate Determinations § 532.239 Review by the lead agency. (a) The lead... wage data collection forms. (b) The lead agency shall determine whether the usable data collected...

  14. 48 CFR 1352.239-71 - Electronic and information technology.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... technology. 1352.239-71 Section 1352.239-71 Federal Acquisition Regulations System DEPARTMENT OF COMMERCE... Electronic and information technology. As prescribed in 48 CFR 1339.270(a), insert the following provision: Electronic and Information Technology (APR 2010) (a) To be considered eligible for award, offerors must...

  15. 48 CFR 1352.239-71 - Electronic and information technology.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... technology. 1352.239-71 Section 1352.239-71 Federal Acquisition Regulations System DEPARTMENT OF COMMERCE... Electronic and information technology. As prescribed in 48 CFR 1339.270(a), insert the following provision: Electronic and Information Technology (APR 2010) (a) To be considered eligible for award, offerors must...

  16. 48 CFR 1352.239-71 - Electronic and information technology.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... technology. 1352.239-71 Section 1352.239-71 Federal Acquisition Regulations System DEPARTMENT OF COMMERCE... Electronic and information technology. As prescribed in 48 CFR 1339.270(a), insert the following provision: Electronic and Information Technology (APR 2010) (a) To be considered eligible for award, offerors must...

  17. 49 CFR 1544.239 - Known shipper program.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 9 2011-10-01 2011-10-01 false Known shipper program. 1544.239 Section 1544.239 Transportation Other Regulations Relating to Transportation (Continued) TRANSPORTATION SECURITY ADMINISTRATION, DEPARTMENT OF HOMELAND SECURITY CIVIL AVIATION SECURITY AIRCRAFT OPERATOR SECURITY: AIR CARRIERS...

  18. 49 CFR 1544.239 - Known shipper program.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 9 2012-10-01 2012-10-01 false Known shipper program. 1544.239 Section 1544.239 Transportation Other Regulations Relating to Transportation (Continued) TRANSPORTATION SECURITY ADMINISTRATION, DEPARTMENT OF HOMELAND SECURITY CIVIL AVIATION SECURITY AIRCRAFT OPERATOR SECURITY: AIR CARRIERS...

  19. 49 CFR 1544.239 - Known shipper program.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 9 2014-10-01 2014-10-01 false Known shipper program. 1544.239 Section 1544.239 Transportation Other Regulations Relating to Transportation (Continued) TRANSPORTATION SECURITY ADMINISTRATION, DEPARTMENT OF HOMELAND SECURITY CIVIL AVIATION SECURITY AIRCRAFT OPERATOR SECURITY: AIR CARRIERS...

  20. 49 CFR 1544.239 - Known shipper program.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 9 2010-10-01 2010-10-01 false Known shipper program. 1544.239 Section 1544.239 Transportation Other Regulations Relating to Transportation (Continued) TRANSPORTATION SECURITY ADMINISTRATION, DEPARTMENT OF HOMELAND SECURITY CIVIL AVIATION SECURITY AIRCRAFT OPERATOR SECURITY: AIR CARRIERS...

  1. 49 CFR 1544.239 - Known shipper program.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 9 2013-10-01 2013-10-01 false Known shipper program. 1544.239 Section 1544.239 Transportation Other Regulations Relating to Transportation (Continued) TRANSPORTATION SECURITY ADMINISTRATION, DEPARTMENT OF HOMELAND SECURITY CIVIL AVIATION SECURITY AIRCRAFT OPERATOR SECURITY: AIR CARRIERS...

  2. 48 CFR 239.7410 - Cancellation and termination.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Cancellation and termination. 239.7410 Section 239.7410 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  3. 48 CFR 239.7102 - Policy and responsibilities.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Policy and responsibilities. 239.7102 Section 239.7102 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  4. 48 CFR 239.7407 - Type of contract.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Type of contract. 239.7407 Section 239.7407 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Telecommunications...

  5. 48 CFR 239.7410 - Cancellation and termination.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Cancellation and termination. 239.7410 Section 239.7410 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  6. 48 CFR 239.7102 - Policy and responsibilities.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Policy and responsibilities. 239.7102 Section 239.7102 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  7. 48 CFR 239.7102 - Policy and responsibilities.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Policy and responsibilities. 239.7102 Section 239.7102 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  8. 48 CFR 239.7102 - Policy and responsibilities.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Policy and responsibilities. 239.7102 Section 239.7102 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  9. 48 CFR 239.7410 - Cancellation and termination.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Cancellation and termination. 239.7410 Section 239.7410 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  10. 48 CFR 239.7300 - Scope of subpart.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Scope of subpart. 239.7300 Section 239.7300 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Requirements for...

  11. 48 CFR 239.7410 - Cancellation and termination.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Cancellation and termination. 239.7410 Section 239.7410 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  12. 48 CFR 239.7410 - Cancellation and termination.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Cancellation and termination. 239.7410 Section 239.7410 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY...

  13. 5 CFR 532.239 - Review by the lead agency.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 5 Administrative Personnel 1 2011-01-01 2011-01-01 false Review by the lead agency. 532.239... PREVAILING RATE SYSTEMS Prevailing Rate Determinations § 532.239 Review by the lead agency. (a) The lead... wage data collection forms. (b) The lead agency shall determine whether the usable data collected in...

  14. 48 CFR 352.239-71 - Standard for encryption language.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... language. 352.239-71 Section 352.239-71 Federal Acquisition Regulations System HEALTH AND HUMAN SERVICES... Standard for encryption language. As prescribed in 339.101(d)(2), the Contracting Officer shall insert the following clause: Standard for Encryption Language (January 2010) (a) The Contractor shall use...

  15. 48 CFR 352.239-71 - Standard for encryption language.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... language. 352.239-71 Section 352.239-71 Federal Acquisition Regulations System HEALTH AND HUMAN SERVICES... Standard for encryption language. As prescribed in 339.101(d)(2), the Contracting Officer shall insert the following clause: Standard for Encryption Language (January 2010) (a) The Contractor shall use...

  16. 48 CFR 352.239-71 - Standard for encryption language.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... language. 352.239-71 Section 352.239-71 Federal Acquisition Regulations System HEALTH AND HUMAN SERVICES... Standard for encryption language. As prescribed in 339.101(d)(2), the Contracting Officer shall insert the following clause: Standard for Encryption Language (January 2010) (a) The Contractor shall use...

  17. 40 CFR 239.3 - Components of program application.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... scope of the program for which the state is seeking approval (i.e., which class of Subtitle D regulated... 40 Protection of Environment 25 2011-07-01 2011-07-01 false Components of program application. 239... REQUIREMENTS FOR STATE PERMIT PROGRAM DETERMINATION OF ADEQUACY State Program Application § 239.3 Components...

  18. 12 CFR 303.224-303.239 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 4 2010-01-01 2010-01-01 false 303.224-303.239 Section 303.224-303.239 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION PROCEDURE AND RULES OF PRACTICE FILING PROCEDURES Section 19 of the FDI Act (Consent to Service of Persons Convicted of Certain Criminal Offenses) §§...

  19. 40 CFR 239.9 - Intervention in civil enforcement proceedings.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 25 2011-07-01 2011-07-01 false Intervention in civil enforcement proceedings. 239.9 Section 239.9 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID... interest that is or may be adversely affected; or, (b) Assurance by the appropriate state agency that: (1...

  20. 40 CFR 239.9 - Intervention in civil enforcement proceedings.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 26 2013-07-01 2013-07-01 false Intervention in civil enforcement proceedings. 239.9 Section 239.9 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID... interest that is or may be adversely affected; or, (b) Assurance by the appropriate state agency that: (1...

  1. 40 CFR 239.9 - Intervention in civil enforcement proceedings.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 26 2012-07-01 2011-07-01 true Intervention in civil enforcement proceedings. 239.9 Section 239.9 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID... interest that is or may be adversely affected; or, (b) Assurance by the appropriate state agency that: (1...

  2. 12 CFR 303.224-303.239 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 12 Banks and Banking 4 2011-01-01 2011-01-01 false 303.224-303.239 Section 303.224-303.239 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION PROCEDURE AND RULES OF PRACTICE FILING PROCEDURES Section 19 of the FDI Act (Consent to Service of Persons Convicted of Certain Criminal Offenses) §§...

  3. 12 CFR 303.224-303.239 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 5 2012-01-01 2012-01-01 false 303.224-303.239 Section 303.224-303.239 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION PROCEDURE AND RULES OF PRACTICE FILING PROCEDURES Section 19 of the FDI Act (Consent to Service of Persons Convicted of Certain Criminal Offenses) §§...

  4. 12 CFR 303.224-303.239 - [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 5 2013-01-01 2013-01-01 false 303.224-303.239 Section 303.224-303.239 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION PROCEDURE AND RULES OF PRACTICE FILING PROCEDURES Section 19 of the FDI Act (Consent to Service of Persons Convicted of Certain Criminal Offenses) §§...

  5. 12 CFR 303.224-303.239 - [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 5 2014-01-01 2014-01-01 false 303.224-303.239 Section 303.224-303.239 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION PROCEDURE AND RULES OF PRACTICE FILING PROCEDURES Section 19 of the FDI Act (Consent to Service of Persons Convicted of Certain Criminal Offenses) §§...

  6. 12 CFR 239.4 - Grounds for disapproval of reorganizations.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... holding company shall file with the Board an opinion from its independent auditors certifying that the....4 Section 239.4 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239...

  7. 12 CFR 239.4 - Grounds for disapproval of reorganizations.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... holding company shall file with the Board an opinion from its independent auditors certifying that the....4 Section 239.4 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239...

  8. 12 CFR 239.4 - Grounds for disapproval of reorganizations.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... holding company shall file with the Board an opinion from its independent auditors certifying that the....4 Section 239.4 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Mutual Holding Companies § 239...

  9. 48 CFR 1352.239-70 - Software license addendum.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 5 2012-10-01 2012-10-01 false Software license addendum. 1352.239-70 Section 1352.239-70 Federal Acquisition Regulations System DEPARTMENT OF COMMERCE CLAUSES... Software license addendum. As prescribed in 48 CFR 1339.107, insert the following clause: Software...

  10. 48 CFR 1352.239-70 - Software license addendum.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 5 2014-10-01 2014-10-01 false Software license addendum. 1352.239-70 Section 1352.239-70 Federal Acquisition Regulations System DEPARTMENT OF COMMERCE CLAUSES... Software license addendum. As prescribed in 48 CFR 1339.107, insert the following clause: Software...

  11. 48 CFR 1352.239-70 - Software license addendum.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 5 2013-10-01 2013-10-01 false Software license addendum. 1352.239-70 Section 1352.239-70 Federal Acquisition Regulations System DEPARTMENT OF COMMERCE CLAUSES... Software license addendum. As prescribed in 48 CFR 1339.107, insert the following clause: Software...

  12. 28 CFR 2.39 - Jurisdiction of the Commission.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Jurisdiction of the Commission. 2.39 Section 2.39 Judicial Administration DEPARTMENT OF JUSTICE PAROLE, RELEASE, SUPERVISION AND RECOMMITMENT OF PRISONERS, YOUTH OFFENDERS, AND JUVENILE DELINQUENTS United States Code Prisoners and Parolees §...

  13. 49 CFR 239.301 - Operational (efficiency) tests.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Operational (efficiency) tests. 239.301 Section... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS Operational (Efficiency) Tests; Inspection of Records and Recordkeeping § 239.301 Operational (efficiency) tests. (a)...

  14. 49 CFR 239.301 - Operational (efficiency) tests.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Operational (efficiency) tests. 239.301 Section... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS Operational (Efficiency) Tests; Inspection of Records and Recordkeeping § 239.301 Operational (efficiency) tests. (a)...

  15. 46 CFR 108.239 - Fuel transfer equipment.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Fuel transfer equipment. 108.239 Section 108.239 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN... static grounding device. (d) Each electric fuel transfer pump must have a control with a fuel transfer...

  16. National Low-Level Waste Management Program Radionuclide Report Series, Volume 17: Plutonium-239

    SciTech Connect

    J. P. Adams; M. L. Carboneau

    1999-03-01

    This report, Volume 17 of the National Low-Level Waste Management Program Radionuclide Report Series, discusses the radiological and chemical characteristics of plutonium-239 (Pu-239). This report also discusses waste types and forms in which Pu-239 can be found, waste and disposal information on Pu-239, and Pu-239 behavior in the environment and in the human body.

  17. Radiography Facility - Building 239 Independent Validation Review

    SciTech Connect

    Altenbach, T J; Beaulieu, R A; Watson, J F; Wong, H J

    2010-02-02

    The purpose of this task was to perform an Independent Validation Review to evaluate the successful implementation and effectiveness of Safety Basis controls, including new and revised controls, to support the implementation of a new DSA/TSR for B239. This task addresses Milestone 2 of FY10 PEP 7.6.6. As the first IVR ever conducted on a LLNL nuclear facility, it was designated a pilot project. The review follows the outline developed for Milestone 1 of the PEP, which is based on the DOE Draft Guide for Performance of Independent Verification Review of Safety Basis Controls. A formal Safety Basis procedure will be developed later, based on the lessons learned with this pilot project. Note, this review is termed a ''Validation'' in order to be consistent with the PEP definition and address issues historically raised about verification mechanisms at LLNL. Validation is intended to confirm that implementing mechanisms realistically establish the ability of TSR LCO, administrative control or safety management program to accomplish its intended safety function and that the controls are being implemented. This effort should not, however, be confused with a compliance assessment against all relevant DOE requirements and national standards. Nor is it used as a vehicle to question the derivation of controls already approved by LSO unless a given TSR statement simply cannot be implemented as stated.

  18. 239Pu Resonance Evaluation for Thermal Benchmark System Calculations

    SciTech Connect

    Leal, Luiz C; Noguere, G; De Saint Jean, C; Kahler, A.

    2013-01-01

    Analyses of thermal plutonium solution critical benchmark systems have indicated a deciency in the 239Pu resonance evaluation. To investigate possible solutions to this issue, the Organisation for Economic Co-operation and Development (OECD) Nuclear Energy Agency (NEA) Working Party for Evaluation Cooperation (WPEC) established Subgroup 34 to focus on the reevaluation of the 239Pu resolved resonance parameters. In addition, the impacts of the prompt neutron multiplication (nubar) and the prompt neutron ssion spectrum (PFNS) have been investigated. The objective of this paper is to present the results of the 239Pu resolved resonance evaluation eort.

  19. 239Pu Resonance Evaluation for Thermal Benchmark System Calculations

    NASA Astrophysics Data System (ADS)

    Leal, L. C.; Noguere, G.; de Saint Jean, C.; Kahler, A. C.

    2014-04-01

    Analyses of thermal plutonium solution critical benchmark systems have indicated a deficiency in the 239Pu resonance evaluation. To investigate possible solutions to this issue, the Organisation for Economic Co-operation and Development (OECD) Nuclear Energy Agency (NEA) Working Party for Evaluation Cooperation (WPEC) established Subgroup 34 to focus on the reevaluation of the 239Pu resolved resonance parameters. In addition, the impacts of the prompt neutron multiplicity (νbar) and the prompt neutron fission spectrum (PFNS) have been investigated. The objective of this paper is to present the results of the 239Pu resolved resonance evaluation effort.

  20. 12 CFR 239.60 - Completion of the offering.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... company must complete all sales of the stock within 45 calendar days after the last day of the... holding company must provide a post-effective amendment to the offering circular under § 239.58(c) to each...

  1. 239. Photocopied July 1978, courtesy LGK and N. Eilertsen. VIEW ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    239. Photocopied July 1978, courtesy LGK and N. Eilertsen. VIEW FROM SHAFT-ROCKHOUSE OVERLOOKING 'LOWER PEWABIC' WITH TELESCOPE HOUSES BUILT 1899-1900 AND SEARS-ROEBUCK HOUSES, BUILT 1917. C. 1920. - Quincy Mining Company, Hancock, Houghton County, MI

  2. 48 CFR 239.7305 - Exclusion and limitation on disclosure.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... TECHNOLOGY Requirements for Information Relating to Supply Chain Risk 239.7305 Exclusion and limitation on... covered procurement— (a) Exclude a source that fails to meet qualification standards established...

  3. 48 CFR 239.7102 - Policy and responsibilities.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7102 Policy and responsibilities. ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Policy...

  4. 48 CFR 239.7100 - Scope of subpart.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Privacy for Computer Systems 239.7100 Scope of subpart. This subpart includes information assurance and Privacy Act considerations. Information assurance requirements are in addition to provisions concerning protection of privacy of individuals (see FAR Subpart 24.1)....

  5. 48 CFR 239.7100 - Scope of subpart.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Privacy for Computer Systems 239.7100 Scope of subpart. This subpart includes information assurance and Privacy Act considerations. Information assurance requirements are in addition to provisions concerning protection of privacy of individuals (see FAR Subpart 24.1)....

  6. 50 CFR 218.239 - Renewal of Letters of Authorization.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Array Sensor System Low Frequency Active (SURTASS LFA) Sonar § 218.239 Renewal of Letters of.... Amending the areas for upcoming SURTASS LFA sonar operations is not considered a substantial modification...

  7. 50 CFR 218.239 - Renewal of Letters of Authorization.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Array Sensor System Low Frequency Active (SURTASS LFA) Sonar § 218.239 Renewal of Letters of.... Amending the areas for upcoming SURTASS LFA sonar operations is not considered a substantial modification...

  8. 50 CFR 218.239 - Renewal of Letters of Authorization.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Array Sensor System Low Frequency Active (SURTASS LFA) Sonar § 218.239 Renewal of Letters of.... Amending the areas for upcoming SURTASS LFA sonar operations is not considered a substantial modification...

  9. [ECG indices in dogs after inhalation of 239Pu].

    PubMed

    Karpova, V N

    1985-11-01

    Dogs of both sexes aged 2 to 4 were subjected to inhalation inoculation with polymer 239Pu or submicron 239PuO2 aerosols in amounts close to acute, subacute and chronically effective ones. ECG was recorded in standard, amplified and single leads (V3). All calculations were done by lead II. Signs of the right heart overburdening were noted in the presence of the P-pulmonale complex, deep S1 wave or cardiac electrical axis of SI-SII-SIII type. Signs of the right heart overburdening were revealed after inhalation of polimer 239Pu (70%). The absence of similar changes in damage caused by 239Pu could be attributed to its fast resorption from the lungs resulting in more moderate lesion of the respiratory organs.

  10. Soft tissue tumors induced by monomeric {sup 239}Pu

    SciTech Connect

    Lloyd, R.D.; Angus, W.; Taylor, G.N.; Miller, S.C.

    1995-10-01

    Individual records of soft tissue tumor occurrence (lifetime incidence) among 236 beagles injected with {sup 239}Pu citrate as young adults and 131 comparable control beagles given no radioactivity enabled us to analyze the possible effects on soft tissue tumor induction resulting from internal exposure to {sup 239}Pu. A significant trend was identified in the proportion of animals having malignant liver tumors with increasing radiation dose from {sup 239}. There was also a significant difference in the relative numbers of both malignant liver tumors (18.1 expected, 66 observed). Malignant tumors of the mouth, pancreas, and skin were more frequent among controls than among the dogs given {sup 239}Pu as well as tumors (malignant plus benign) of the mouth, pancreas, testis, and vagina. For all other tumor sites or types, there was no significant difference for both malignant and all (malignant plus benign) tumors. Mammary tumor occurrence appeared not to be associated with {sup 239}Pu incorporation. We conclude that the only soft-tissue neoplasia induced by the intake of {sup 239}Pu directly into blood is probably a liver tumor. 20 refs., 6 tabs.

  11. Development of electron beam ion source charge breeder for rare isotopes at Californium Rare Isotope Breeder Upgrade.

    PubMed

    Kondrashev, S; Dickerson, C; Levand, A; Ostroumov, P N; Pardo, R C; Savard, G; Vondrasek, R; Alessi, J; Beebe, E; Pikin, A; Kuznetsov, G I; Batazova, M A

    2012-02-01

    Recently, the Californium Rare Isotope Breeder Upgrade (CARIBU) to the Argonne Tandem Linac Accelerator System (ATLAS) was commissioned and became available for production of rare isotopes. Currently, an electron cyclotron resonance ion source is used as a charge breeder for CARIBU beams. To further increase the intensity and improve the purity of neutron-rich ion beams accelerated by ATLAS, we are developing a high-efficiency charge breeder for CARIBU based on an electron beam ion source (EBIS). The CARIBU EBIS charge breeder will utilize the state-of-the-art EBIS technology recently developed at Brookhaven National Laboratory (BNL). The electron beam current density in the CARIBU EBIS trap will be significantly higher than that in existing operational charge-state breeders based on the EBIS concept. The design of the CARIBU EBIS charge breeder is nearly complete. Long-lead components of the EBIS such as a 6-T superconducting solenoid and an electron gun have been ordered with the delivery schedule in the fall of 2011. Measurements of expected breeding efficiency using the BNL Test EBIS have been performed using a Cs(+) surface ionization ion source for external injection in pulsed mode. In these experiments we have achieved ∼70% injection∕extraction efficiency and breeding efficiency into the most abundant charge state of ∼17%.

  12. Neutron flux characterization of californium-252 Neutron Research Facility at the University of Texas - Pan American by nuclear analytical technique

    NASA Astrophysics Data System (ADS)

    Wahid, Kareem; Sanchez, Patrick; Hannan, Mohammad

    2014-03-01

    In the field of nuclear science, neutron flux is an intrinsic property of nuclear reaction facilities that is the basis for experimental irradiation calculations and analysis. In the Rio Grande Valley (Texas), the UTPA Neutron Research Facility (NRF) is currently the only neutron facility available for experimental research purposes. The facility is comprised of a 20-microgram californium-252 neutron source surrounded by a shielding cascade containing different irradiation cavities. Thermal and fast neutron flux values for the UTPA NRF have yet to be fully investigated and may be of particular interest to biomedical studies in low neutron dose applications. Though a variety of techniques exist for the characterization of neutron flux, neutron activation analysis (NAA) of metal and nonmetal foils is a commonly utilized experimental method because of its detection sensitivity and availability. The aim of our current investigation is to employ foil activation in the determination of neutron flux values for the UTPA NSRF for further research purposes. Neutron spectrum unfolding of the acquired experimental data via specialized software and subsequent comparison for consistency with computational models lends confidence to the results.

  13. Development of electron beam ion source charge breeder for rare isotopes at Californium Rare Isotope Breeder Upgradea)

    NASA Astrophysics Data System (ADS)

    Kondrashev, S.; Dickerson, C.; Levand, A.; Ostroumov, P. N.; Pardo, R. C.; Savard, G.; Vondrasek, R.; Alessi, J.; Beebe, E.; Pikin, A.; Kuznetsov, G. I.; Batazova, M. A.

    2012-02-01

    Recently, the Californium Rare Isotope Breeder Upgrade (CARIBU) to the Argonne Tandem Linac Accelerator System (ATLAS) was commissioned and became available for production of rare isotopes. Currently, an electron cyclotron resonance ion source is used as a charge breeder for CARIBU beams. To further increase the intensity and improve the purity of neutron-rich ion beams accelerated by ATLAS, we are developing a high-efficiency charge breeder for CARIBU based on an electron beam ion source (EBIS). The CARIBU EBIS charge breeder will utilize the state-of-the-art EBIS technology recently developed at Brookhaven National Laboratory (BNL). The electron beam current density in the CARIBU EBIS trap will be significantly higher than that in existing operational charge-state breeders based on the EBIS concept. The design of the CARIBU EBIS charge breeder is nearly complete. Long-lead components of the EBIS such as a 6-T superconducting solenoid and an electron gun have been ordered with the delivery schedule in the fall of 2011. Measurements of expected breeding efficiency using the BNL Test EBIS have been performed using a Cs+ surface ionization ion source for external injection in pulsed mode. In these experiments we have achieved ˜70% injection/extraction efficiency and breeding efficiency into the most abundant charge state of ˜17%.

  14. Operational experience with the Argonne National Laboratory Californium Rare Ion Breeder Upgrade facility and electron cyclotron resonance charge breeder

    NASA Astrophysics Data System (ADS)

    Vondrasek, R.; Clark, J.; Levand, A.; Palchan, T.; Pardo, R.; Savard, G.; Scott, R.

    2014-02-01

    The Californium Rare Ion Breeder Upgrade (CARIBU) of the Argonne National Laboratory Argonne Tandem Linac Accelerator System (ATLAS) facility provides low-energy and accelerated neutron-rich radioactive beams to address key nuclear physics and astrophysics questions. A 350 mCi 252Cf source produces fission fragments which are thermalized and collected by a helium gas catcher into a low-energy particle beam with a charge of 1+ or 2+. An electron cyclotron resonance (ECR) ion source functions as a charge breeder in order to raise the ion charge sufficiently for acceleration in the ATLAS linac. The ECR charge breeder has achieved stable beam charge breeding efficiencies of 10.1% for 23Na7+, 17.9% for 39K10+, 15.6% for 84Kr17+, and 12.4% for 133Cs27+. For the radioactive beams, a charge breeding efficiency of 11.7% has been achieved for 143Cs27+ and 14.7% for 143Ba27+. The typical breeding times are 10 ms/charge state, but the source can be tuned such that this value increases to 100 ms/charge state with the best breeding efficiency corresponding to the longest breeding times—the variation of efficiencies with breeding time will be discussed. Efforts have been made to characterize and reduce the background contaminants present in the ion beam through judicious choice of q/m combinations. Methods of background reduction are being investigated based upon plasma chamber cleaning and vacuum practices.

  15. Operational experience with the Argonne National Laboratory Californium Rare Ion Breeder Upgrade facility and electron cyclotron resonance charge breeder.

    PubMed

    Vondrasek, R; Clark, J; Levand, A; Palchan, T; Pardo, R; Savard, G; Scott, R

    2014-02-01

    The Californium Rare Ion Breeder Upgrade (CARIBU) of the Argonne National Laboratory Argonne Tandem Linac Accelerator System (ATLAS) facility provides low-energy and accelerated neutron-rich radioactive beams to address key nuclear physics and astrophysics questions. A 350 mCi (252)Cf source produces fission fragments which are thermalized and collected by a helium gas catcher into a low-energy particle beam with a charge of 1+ or 2+. An electron cyclotron resonance (ECR) ion source functions as a charge breeder in order to raise the ion charge sufficiently for acceleration in the ATLAS linac. The ECR charge breeder has achieved stable beam charge breeding efficiencies of 10.1% for (23)Na(7+), 17.9% for (39)K(10+), 15.6% for (84)Kr(17+), and 12.4% for (133)Cs(27+). For the radioactive beams, a charge breeding efficiency of 11.7% has been achieved for (143)Cs(27+) and 14.7% for (143)Ba(27+). The typical breeding times are 10 ms/charge state, but the source can be tuned such that this value increases to 100 ms/charge state with the best breeding efficiency corresponding to the longest breeding times-the variation of efficiencies with breeding time will be discussed. Efforts have been made to characterize and reduce the background contaminants present in the ion beam through judicious choice of q/m combinations. Methods of background reduction are being investigated based upon plasma chamber cleaning and vacuum practices.

  16. Development of electron beam ion source charge breeder for rare isotopes at Californium Rare Isotope Breeder Upgrade

    SciTech Connect

    Kondrashev S.; Alessi J.; Dickerson, C.; Levand, A.; Ostroumov, P.N.; Pardo, R.C.; Savard, G.; Vondrasek, R.; Beebe, E.; Pikin, A.; Kuznetsov, G.I.; Batazova, M.A.

    2012-02-03

    Recently, the Californium Rare Isotope Breeder Upgrade (CARIBU) to the Argonne Tandem Linac Accelerator System (ATLAS) was commissioned and became available for production of rare isotopes. Currently, an electron cyclotron resonance ion source is used as a charge breeder for CARIBU beams. To further increase the intensity and improve the purity of neutron-rich ion beams accelerated by ATLAS, we are developing a high-efficiency charge breeder for CARIBU based on an electron beam ion source (EBIS). The CARIBU EBIS charge breeder will utilize the state-of-the-art EBIS technology recently developed at Brookhaven National Laboratory (BNL). The electron beam current density in the CARIBU EBIS trap will be significantly higher than that in existing operational charge-state breeders based on the EBIS concept. The design of the CARIBU EBIS charge breeder is nearly complete. Long-lead components of the EBIS such as a 6-T superconducting solenoid and an electron gun have been ordered with the delivery schedule in the fall of 2011. Measurements of expected breeding efficiency using the BNL Test EBIS have been performed using a Cs{sup +} surface ionization ion source for external injection in pulsed mode. In these experiments we have achieved {approx}70% injection/extraction efficiency and breeding efficiency into the most abundant charge state of {approx}17%.

  17. Development of electron beam ion source charge breeder for rare isotopes at Californium Rare Isotope Breeder Upgrade

    SciTech Connect

    Kondrashev, S.; Dickerson, C.; Levand, A.; Ostroumov, P. N.; Pardo, R. C.; Savard, G.; Vondrasek, R.; Alessi, J.; Beebe, E.; Pikin, A.; Kuznetsov, G. I.; Batazova, M. A.

    2012-02-15

    Recently, the Californium Rare Isotope Breeder Upgrade (CARIBU) to the Argonne Tandem Linac Accelerator System (ATLAS) was commissioned and became available for production of rare isotopes. Currently, an electron cyclotron resonance ion source is used as a charge breeder for CARIBU beams. To further increase the intensity and improve the purity of neutron-rich ion beams accelerated by ATLAS, we are developing a high-efficiency charge breeder for CARIBU based on an electron beam ion source (EBIS). The CARIBU EBIS charge breeder will utilize the state-of-the-art EBIS technology recently developed at Brookhaven National Laboratory (BNL). The electron beam current density in the CARIBU EBIS trap will be significantly higher than that in existing operational charge-state breeders based on the EBIS concept. The design of the CARIBU EBIS charge breeder is nearly complete. Long-lead components of the EBIS such as a 6-T superconducting solenoid and an electron gun have been ordered with the delivery schedule in the fall of 2011. Measurements of expected breeding efficiency using the BNL Test EBIS have been performed using a Cs{sup +} surface ionization ion source for external injection in pulsed mode. In these experiments we have achieved {approx}70% injection/extraction efficiency and breeding efficiency into the most abundant charge state of {approx}17%.

  18. Early-stage esophageal squamous cell carcinoma treated with californium-252 neutron brachytherapy: clinical report on 16 cases.

    PubMed

    Liu, Huiming; Wang, Qifeng; Jia, Xitang; Liu, Bo; Wang, C-K Chris

    2013-01-01

    Californium-252 (²⁵²Cf) neutron brachytherapy is a form of high linear energy transfer radiotherapy, which has proven effective when used in combination with external beam radiotherapy to treat intracavitary cancers of the cervix, colon/rectum and esophagus. No study has been reported for treatment of intracavitary cancers with neutron brachytherapy alone. The aim of the study was to observe and analyze the long-term curative effects and complications for early stage thoracic esophageal cancer patients treated with neutron brachytherapy alone. From December 2001 to August 2006, 16 patients of early stage squamous cell carcinoma underwent neutron brachytherapy. The total radiation dose to the reference point was 20-28 Gy-eq in 5 to 7 fractions with 4 Gy-eq/fraction. The 1-, 3-, and 5-year follow-up rates were 100%. The 2-, 3-, 4-, and 5-year survival rates were 100%, 87.5%, 87.5%, and 75%, respectively. The early complication rates for grades 1 and 2 radiation esophagitis were 75% and 25%, respectively. The late complication rates for grades 0 and 1 (according to the RTOG/EORTC standard) were 87.5% and 12.5%, respectively. Barium esophagography after treatments confirmed that the complete response rate was 100%. Fourteen patients were confirmed by endoscopy to have either normal mucosa or inflammation change. Neutron brachytherapy alone was an effective and safe treatment for early stage esophageal squamous cell cancer.

  19. [Reoxygenation of tumors of the uterine cervix during combined radiotherapy using low dose gamma-neutron irradiation with californium-252].

    PubMed

    Tacev, T; Rasovská, O; Strnad, V; Krystof, V; Prokes, B; Vacek, A

    1989-03-01

    A polarographic method was used to follow the changes in oxygenation of a tumour of uterus cervix after intracavital irradiation by 252Cf by a physical dose of 2 Gy, applied at the beginning of a therapeutic cycle of combined radiotherapy. The results reached are compared with the results of tumour oxygenation in the course of a conventional therapeutic procedure. It has become apparent that even after the irradiation of a tumour of uterus cervix by a small dose of gamma-neutron radiation with 252Cf there is, beginning with 2nd week of therapy, a significant reoxygenation of the tumour population. The changes of oxygenation after a conventional irradiation have been less marked and reached, in the 4th week of therapy, only marginally significant increase. Differences in reoxygenation of tumours of uterus cervix were confirmed by analysis of the oxygen test. The importance of tumour reoxygenation after the application of 252Cf source of radiation for facilitation of its regression in a combined treatment with Californium-252 and gamma irradiation is discussed.

  20. Treatment of stage IIIB cervical cancer with Californium-252 fast-neutron brachytherapy and external photon therapy

    SciTech Connect

    Gallion, H.H.; Maruyama, Y.; van Nagell, J.R. Jr.; Donaldson, E.S.; Rowley, K.C.; Yoneda, J.; Beach, J.L.; Powell, D.E.; Kryscio, R.J.

    1987-05-15

    From January 1977 to July 1984, 32 patients with Stage IIIB cervical cancer were treated at the University of Kentucky Medical Center by a combination of outpatient neutron brachytherapy and external pelvic radiation. These patients received 4500 to 5000 rad external photon therapy and two or three outpatient Californium-252 (252Cf) implants, plus sidewall boost irradiation. Treatment results were compared retrospectively to those obtained in a historical control group of patients with Stage IIIB cervical cancer treated with external radiation and conventional photon brachytherapy from 1972 to 1976. Local or regional tumor recurrence developed in 53% of patients treated with neutron therapy and an additional 9% experienced distant metastases. Thirty-eight percent of patients remain free of disease 12 to 96 months (mean, 51 months) after therapy. The 2-year and 5-year survival rates of patients treated with neutron therapy were 53% and 36%, which were not significantly different than those obtained with photon brachytherapy (2-year survival, 61%; 5-year survival, 34%). Complications of neutron therapy were minimal and included proctitis (19%) and vaginal stenosis (9%). There were no cases of enteric fistulae. Outpatient neutron brachytherapy was cost effective and was well tolerated by patients.

  1. Treatment of stage IIIB cervical cancer with Californium-252 fast-neutron brachytherapy and external photon therapy.

    PubMed

    Gallion, H H; Maruyama, Y; van Nagell, J R; Donaldson, E S; Rowley, K C; Yoneda, J; Beach, J L; Powell, D E; Kryscio, R J

    1987-05-15

    From January 1977 to July 1984, 32 patients with Stage IIIB cervical cancer were treated at the University of Kentucky Medical Center by a combination of outpatient neutron brachytherapy and external pelvic radiation. These patients received 4500 to 5000 rad external photon therapy and two or three outpatient Californium-252 (252Cf) implants, plus sidewall boost irradiation. Treatment results were compared retrospectively to those obtained in a historical control group of patients with Stage IIIB cervical cancer treated with external radiation and conventional photon brachytherapy from 1972 to 1976. Local or regional tumor recurrence developed in 53% of patients treated with neutron therapy and an additional 9% experienced distant metastases. Thirty-eight percent of patients remain free of disease 12 to 96 months (mean, 51 months) after therapy. The 2-year and 5-year survival rates of patients treated with neutron therapy were 53% and 36%, which were not significantly different than those obtained with photon brachytherapy (2-year survival, 61%; 5-year survival, 34%). Complications of neutron therapy were minimal and included proctitis (19%) and vaginal stenosis (9%). There were no cases of enteric fistulae. Outpatient neutron brachytherapy was cost effective and was well tolerated by patients.

  2. Measurements Conducted on an Unknown Object Labeled Pu-239

    SciTech Connect

    Hoteling, Nathan

    2013-11-18

    Measurements were carried out on 12 November 2013 to determine whether Pu-239 was present on an object discovered in a plastic bag with label “Pu-­239 6 uCi.” Following initial survey measurements to verify that the object was not leaking or contaminated, spectra were collected with a High Purity Germanium (HPGe) detector with object positioned in two different configurations. Analysis of the spectra did not yield any direct evidence of Pu-­239. From the measured spectra, minimum detectable activity (MDA) was determined to be approximately 2 uCi for the gamma-­ray measurements. Although there was no direct evidence of Pu-239, a peak at 60 keV characteristic of Am-­241 decay was observed. Since it is very likely that Am-­241 would be present in aged plutonium samples, this was interpreted as indirect evidence for the presence of plutonium on the object. Analysis of this peak led to an estimated Pu-­239 activity of 0.02–0.04 uCi, or <1x10-6 grams.

  3. LOW THERMAL LIMIT OF GROWTH RATE OF SYMBIODINIUM CALIFORNIUM (DINOPHYTA) IN CULTURE MAY RESTRICT THE SYMBIONT TO SOUTHERN POPULATIONS OF ITS HOST ANEMONES (ANTHOPLEURA SPP.; ANTHOZOA, CNIDARIA)(1).

    PubMed

    McBride, Brooke Baldauf; Muller-Parker, Gisèle; Jakobsen, Hans Henrik

    2009-08-01

    Symbiodinium californium (#383, Banaszak et al. 1993) is one of two known dinoflagellate symbionts of the intertidal sea anemones Anthopleura elegantissima, A. xanthogrammica, and A. sola and occurs only in hosts at southern latitudes of the North Pacific. To investigate if temperature restricts the latitudinal distribution of S. californium, growth and photosynthesis at a range of temperatures (5°C-30°C) were determined for cultured symbionts. Mean specific growth rates were the highest between 15°C and 28°C (μ 0.21-0.26 · d(-1) ) and extremely low at 5, 10, and 30°C (0.02-0.03 · d(-1) ). Average doubling times ranged from 2.7 d (20°C) to 33 d (5, 10, and 30°C). Cells cultured at 10°C had the greatest cell volume (821 μm(3) ) and the highest percentage of motile cells (64.5%). Growth and photosynthesis were uncoupled; light-saturated maximum photosynthesis (Pmax ) increased from 2.9 pg C · cell(-1 ) · h(-1) at 20°C to 13.2 pg C · cell(-1 ) · h(-1) at 30°C, a 4.5-fold increase. Less than 11% of daily photosynthetically fixed carbon was utilized for growth at 5, 10, and 30°C, indicating the potential for high carbon translocation at these temperatures. Low temperature effects on growth rate, and not on photosynthesis and cell morphology, may restrict the distribution of S. californium to southern populations of its host anemones.

  4. Pu-239 and Pu-240 inventories and Pu-240/ Pu-239 atom ratios in the water column off Sanriku, Japan.

    NASA Astrophysics Data System (ADS)

    Yamada, Masatoshi; Zheng, Jian; Aono, Tatsuo

    2013-04-01

    A magnitude 9.0 earthquake and subsequent tsunami occurred in the Pacific Ocean off northern Honshu, Japan, on 11 March 2011 which caused severe damage to the Fukushima Dai-ichi Nuclear Power Plant. This accident has resulted in a substantial release of radioactive materials to the atmosphere and ocean, and has caused extensive contamination of the environment. However, no information is available on the amounts of radionuclides such as Pu isotopes released into the ocean at this time. Investigating the background baseline concentration and atom ratio of Pu isotopes in seawater is important for assessment of the possible contamination in the marine environment. Pu-239 (half-life: 24,100 years), Pu-240 (half-life: 6,560 years) and Pu-241 (half-life: 14.325 years) mainly have been released into the environment as the result of atmospheric nuclear weapons testing. The atom ratio of Pu-240/Pu-239 is a powerful fingerprint to identify the sources of Pu in the ocean. The Pu-239 and Pu-240 inventories and Pu-240/Pu-239 atom ratios in seawater samples collected in the western North Pacific off Sanriku before the accident at Fukushima Dai-ichi Nuclear Power Plant will provide useful background baseline data for understanding the process controlling Pu transport and for distinguishing additional Pu sources. Seawater samples were collected with acoustically triggered quadruple PVC sampling bottles during the KH-98-3 cruise of the R/V Hakuho-Maru. The Pu-240/Pu-239 atom ratios were measured with a double-focusing SF-ICP-MS, which was equipped with a guard electrode to eliminate secondary discharge in the plasma and to enhance overall sensitivity. The Pu-239 and Pu-240 concentrations were 2.07 and 1.67 mBq/m3 in the surface water, respectively, and increased with depth; a subsurface maximum was identified at 750 m depth, and the concentrations decreased with depth, then increased at the bottom layer. The total Pu-239+240 inventory in the entire water column (depth interval 0

  5. Results with the electron cyclotron resonance charge breeder for the 252Cf fission source project (Californium Rare Ion Breeder Upgrade) at Argonne Tandem Linac Accelerator System.

    PubMed

    Vondrasek, R; Kondrashev, S; Pardo, R; Scott, R; Zinkann, G P

    2010-02-01

    The construction of the Californium Rare Ion Breeder Upgrade, a new radioactive beam facility for the Argonne Tandem Linac Accelerator System (ATLAS), is nearing completion. The facility will use fission fragments from a 1 Ci (252)Cf source; thermalized and collected into a low-energy particle beam by a helium gas catcher. In order to reaccelerate these beams, an existing ATLAS electron cyclotron resonance (ECR) ion source was redesigned to function as an ECR charge breeder. Thus far, the charge breeder has been tested with stable beams of rubidium and cesium achieving charge breeding efficiencies of 9.7% into (85)Rb(17+) and 2.9% into (133)Cs(20+).

  6. Atomic Mass and Nuclear Binding Energy for At-239 (Astatine)

    NASA Astrophysics Data System (ADS)

    Sukhoruchkin, S. I.; Soroko, Z. N.

    This document is part of the Supplement containing the complete sets of data of Subvolume B `Nuclei with Z = 55 - 100' of Volume 22 `Nuclear Binding Energies and Atomic Masses' of Landolt-Börnstein - Group I `Elementary Particles, Nuclei and Atoms', and additionally including data for nuclei with Z = 101 - 130. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope At-239 (Astatine, atomic number Z = 85, mass number A = 239).

  7. Atomic Mass and Nuclear Binding Energy for Ac-239 (Actinium)

    NASA Astrophysics Data System (ADS)

    Sukhoruchkin, S. I.; Soroko, Z. N.

    This document is part of the Supplement containing the complete sets of data of Subvolume B `Nuclei with Z = 55 - 100' of Volume 22 `Nuclear Binding Energies and Atomic Masses' of Landolt-Börnstein - Group I `Elementary Particles, Nuclei and Atoms', and additionally including data for nuclei with Z = 101 - 130. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Ac-239 (Actinium, atomic number Z = 89, mass number A = 239).

  8. Atomic Mass and Nuclear Binding Energy for Bk-239 (Berkelium)

    NASA Astrophysics Data System (ADS)

    Sukhoruchkin, S. I.; Soroko, Z. N.

    This document is part of the Supplement containing the complete sets of data of Subvolume B `Nuclei with Z = 55 - 100' of Volume 22 `Nuclear Binding Energies and Atomic Masses' of Landolt-Börnstein - Group I `Elementary Particles, Nuclei and Atoms', and additionally including data for nuclei with Z = 101 - 130. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Bk-239 (Berkelium, atomic number Z = 97, mass number A = 239).

  9. Early changes in flow cytometric DNA profiles induced by californium-252 neutron brachytherapy in squamocellular carcinomas of the uterine cervix.

    PubMed

    Tacev, T; Zaloudík, J; Janáková, L; Vagunda, V

    1998-01-01

    Ninety-five squamocellular carcinomas of the uterine cervix, clinical Stages II and III, were treated by either four schedules combining 252-californium neutron-gamma-radiotherapy with different proportions of a neutron component (9, 6 and 3 Gy) or gamma-irradiation alone. Flow cytometric DNA profiles were obtainable in 72 cases before treatment and 56 cases were monitored for DNA content by flow cytometry (FCM) in weekly intervals by analysis of sequential microbiopsies for one month during and after radiotherapy. DNA aneuploidy was reduced from 40% (25/63) to 19% (9/47) one week within therapy in neutron-treated groups, but not after initial gamma-radiotherapy alone. Extinction of DNA aneuploid subpopulations occurred after neutron therapy in all remaining aneuploid tumors (9/9) during further monitoring, but only in 40% (2/5) of tumors after sole gamma-irradiation. In contrast, proliferation index by more than 50% was more often achieved in groups with a higher gamma-radiation component than after neutrons only. When all therapy-induced DNA flow cytometric events are taken together for evaluation of the effects of various radiotherapy schedules, it appears that the regimen with the maximal neutron dose may not be optimal for all tumors. It is hypothesized that the differences in the early flow cytometric DNA profiles may select the DNA aneuploid squamous cell uterine cervical carcinomas as candidates for combined neutron-brachytherapy, while highly proliferating DNA near-diploid tumors may profit more from treatment with a higher gamma-radiotherapy component. However, these early DNA flow cytometric findings need to be correlated with clinical course of the disease to validate this hypothesis, a process which will be completed at the end of the expected five-year clinical outcome in 2000.

  10. 28 CFR 2.39 - Jurisdiction of the Commission.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Section 2.39 Judicial Administration DEPARTMENT OF JUSTICE PAROLE, RELEASE, SUPERVISION AND RECOMMITMENT... as provided by § 2.35, § 2.43, or § 2.52. (b) The parole of any parolee shall run concurrently with the period of parole or probation under any other Federal, State, or local sentence. (c) Upon...

  11. 28 CFR 2.39 - Jurisdiction of the Commission.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Section 2.39 Judicial Administration DEPARTMENT OF JUSTICE PAROLE, RELEASE, SUPERVISION AND RECOMMITMENT... as provided by § 2.35, § 2.43, or § 2.52. (b) The parole of any parolee shall run concurrently with the period of parole or probation under any other Federal, State, or local sentence. (c) Upon...

  12. 40 CFR 239.9 - Intervention in civil enforcement proceedings.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Intervention in civil enforcement... Programs § 239.9 Intervention in civil enforcement proceedings. Any state seeking approval must provide for intervention in the state civil enforcement process by providing either: (a) Authority that allows intervention...

  13. 48 CFR 2452.239-71 - Information Technology Virus Security.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 6 2011-10-01 2011-10-01 false Information Technology... Provisions and Clauses 2452.239-71 Information Technology Virus Security. As prescribed in 2439.107(b), insert the following clause: Information Technology Virus Security (FEB 2006) (a) The contractor...

  14. 49 CFR 239.1 - Purpose and scope.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ..., DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.1 Purpose and scope. (a... by ensuring that railroads involved in passenger train operations can effectively and efficiently manage passenger train emergencies. (b) This part prescribes minimum Federal safety standards for the...

  15. 49 CFR 239.1 - Purpose and scope.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ..., DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.1 Purpose and scope. (a... by ensuring that railroads involved in passenger train operations can effectively and efficiently manage passenger train emergencies. (b) This part prescribes minimum Federal safety standards for the...

  16. 49 CFR 239.1 - Purpose and scope.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ..., DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS General § 239.1 Purpose and scope. (a... by ensuring that railroads involved in passenger train operations can effectively and efficiently manage passenger train emergencies. (b) This part prescribes minimum Federal safety standards for the...

  17. 48 CFR 52.239-1 - Privacy or Security Safeguards.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 2 2013-10-01 2013-10-01 false Privacy or Security....239-1 Privacy or Security Safeguards. As prescribed in 39.107, insert a clause substantially the same as the following: Privacy or Security Safeguards (AUG 1996) (a) The Contractor shall not publish...

  18. 48 CFR 52.239-1 - Privacy or Security Safeguards.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 2 2014-10-01 2014-10-01 false Privacy or Security....239-1 Privacy or Security Safeguards. As prescribed in 39.107, insert a clause substantially the same as the following: Privacy or Security Safeguards (AUG 1996) (a) The Contractor shall not publish...

  19. 48 CFR 52.239-1 - Privacy or Security Safeguards.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 2 2011-10-01 2011-10-01 false Privacy or Security....239-1 Privacy or Security Safeguards. As prescribed in 39.107, insert a clause substantially the same as the following: Privacy or Security Safeguards (AUG 1996) (a) The Contractor shall not publish...

  20. 48 CFR 52.239-1 - Privacy or Security Safeguards.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 2 2010-10-01 2010-10-01 false Privacy or Security....239-1 Privacy or Security Safeguards. As prescribed in 39.107, insert a clause substantially the same as the following: Privacy or Security Safeguards (AUG 1996) (a) The Contractor shall not publish...

  1. 48 CFR 52.239-1 - Privacy or Security Safeguards.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 2 2012-10-01 2012-10-01 false Privacy or Security....239-1 Privacy or Security Safeguards. As prescribed in 39.107, insert a clause substantially the same as the following: Privacy or Security Safeguards (AUG 1996) (a) The Contractor shall not publish...

  2. 7 CFR 205.239 - Livestock living conditions.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... with §§ 205.239(b) and (c). Yards, feeding pads, and feedlots may be used to provide ruminants with.... Yards, feeding pads, and feedlots shall be large enough to allow all ruminant livestock occupying the.... Continuous total confinement of any animal indoors is prohibited. Continuous total confinement of...

  3. 48 CFR 1852.239-70 - Alternate delivery points.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 6 2010-10-01 2010-10-01 true Alternate delivery points... 1852.239-70 Alternate delivery points. As prescribed in 1839.106-70(a)(1), insert the following clause: Alternate Delivery Points (NOV 1993) (a) The first priority of this contract is to satisfy the...

  4. 48 CFR 1852.239-70 - Alternate delivery points.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 6 2011-10-01 2011-10-01 false Alternate delivery points... 1852.239-70 Alternate delivery points. As prescribed in 1839.106-70(a)(1), insert the following clause: Alternate Delivery Points (NOV 1993) (a) The first priority of this contract is to satisfy the...

  5. 36 CFR 223.239 - Free use by individuals.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 36 Parks, Forests, and Public Property 2 2014-07-01 2014-07-01 false Free use by individuals. 223... Special Forest Products Award of Contracts, Permits, Or Other Authorizing Instruments § 223.239 Free use by individuals. (a) Free use. A person may harvest a special forest product from National Forest...

  6. 36 CFR 223.239 - Free use by individuals.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 36 Parks, Forests, and Public Property 2 2011-07-01 2011-07-01 false Free use by individuals. 223... Special Forest Products Award of Contracts, Permits, Or Other Authorizing Instruments § 223.239 Free use by individuals. (a) Free use. A person may harvest a special forest product from National Forest...

  7. 36 CFR 223.239 - Free use by individuals.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 36 Parks, Forests, and Public Property 2 2012-07-01 2012-07-01 false Free use by individuals. 223... Special Forest Products Award of Contracts, Permits, Or Other Authorizing Instruments § 223.239 Free use by individuals. (a) Free use. A person may harvest a special forest product from National Forest...

  8. 36 CFR 223.239 - Free use by individuals.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 36 Parks, Forests, and Public Property 2 2013-07-01 2013-07-01 false Free use by individuals. 223... Special Forest Products Award of Contracts, Permits, Or Other Authorizing Instruments § 223.239 Free use by individuals. (a) Free use. A person may harvest a special forest product from National Forest...

  9. 49 CFR 239.103 - Passenger train emergency simulations.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... passenger train service that results in serious injury or death to one or more persons and property damage... 49 Transportation 4 2012-10-01 2012-10-01 false Passenger train emergency simulations. 239.103... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS Specific Requirements §...

  10. 49 CFR 239.103 - Passenger train emergency simulations.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... passenger train service that results in serious injury or death to one or more persons and property damage... 49 Transportation 4 2011-10-01 2011-10-01 false Passenger train emergency simulations. 239.103... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PASSENGER TRAIN EMERGENCY PREPAREDNESS Specific Requirements §...

  11. 48 CFR 3452.239-72 - Department security requirements.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Clauses 3452.239-72 Department security requirements. As prescribed in 3439.702, include the following... Requirements (MAR 2011) (a) The contractor and its subcontractors shall comply with Department security policy requirements as set forth in the “Bidder's Security Package: Security Requirements for Contractors...

  12. 48 CFR 3452.239-72 - Department security requirements.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Clauses 3452.239-72 Department security requirements. As prescribed in 3439.702, include the following... Requirements (MAR 2011) (a) The contractor and its subcontractors shall comply with Department security policy requirements as set forth in the “Bidder's Security Package: Security Requirements for Contractors...

  13. 48 CFR 3452.239-72 - Department security requirements.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Clauses 3452.239-72 Department security requirements. As prescribed in 3439.702, include the following... Requirements (MAR 2011) (a) The contractor and its subcontractors shall comply with Department security policy requirements as set forth in the “Bidder's Security Package: Security Requirements for Contractors...

  14. 12 CFR 239.65 - Voluntary supervisory conversions.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... Section 239.65 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Conversions From Mutual to Stock Form... company. (2) The name, address, date and place of birth, and social security number or tax...

  15. 12 CFR 239.65 - Voluntary supervisory conversions.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... Section 239.65 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Conversions from Mutual to Stock Form... company. (2) The name, address, date and place of birth, and social security number or tax...

  16. 48 CFR 239.7306 - Solicitation provision and contract clause.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Requirements for Information Relating to Supply Chain Risk 239.7306 Solicitation provision and..., that involve the development or delivery of any information technology whether acquired as a service or...

  17. 48 CFR 3452.239-72 - Department security requirements.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Security Screenings” available at the Web site listed in the first paragraph of this clause. (f) Failure to... 48 Federal Acquisition Regulations System 7 2013-10-01 2012-10-01 true Department security... Clauses 3452.239-72 Department security requirements. As prescribed in 3439.702, include the...

  18. 48 CFR 1352.239-71 - Electronic and information technology.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... CLAUSES AND FORMS SOLICITATION PROVISIONS AND CONTRACT CLAUSES Text of Provisions and Clauses 1352.239-71... future. (c) Alternatively, offerors may propose products and services that provide equivalent... feature or components providing equivalent facilitation. If none of the offers that meet all...

  19. 49 CFR 239.103 - Passenger train emergency simulations.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Passenger train emergency simulations. 239.103....103 Passenger train emergency simulations. (a) General. Each railroad operating passenger train service shall conduct full-scale emergency simulations, in order to determine its capability to execute...

  20. 49 CFR 239.103 - Passenger train emergency simulations.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Passenger train emergency simulations. 239.103....103 Passenger train emergency simulations. (a) General. Each railroad operating passenger train service shall conduct full-scale emergency simulations, in order to determine its capability to execute...

  1. 49 CFR 239.103 - Passenger train emergency simulations.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Passenger train emergency simulations. 239.103....103 Passenger train emergency simulations. (a) General. Each railroad operating passenger train service shall conduct full-scale emergency simulations, in order to determine its capability to execute...

  2. 40 CFR 180.239 - Phosphamidon; tolerances for residues.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Phosphamidon; tolerances for residues...) PESTICIDE PROGRAMS TOLERANCES AND EXEMPTIONS FOR PESTICIDE CHEMICAL RESIDUES IN FOOD Specific Tolerances § 180.239 Phosphamidon; tolerances for residues. (a) General. Tolerances (expressed as phosphamidon)...

  3. 12 CFR 239.30 - Annual reports; books and records.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 4 2014-01-01 2014-01-01 false Annual reports; books and records. 239.30... Annual reports; books and records. (a) Annual reports to stockholders. A subsidiary holding company not... report, shall be transmitted by the subsidiary holding company to the appropriate Reserve Bank. (b) Books...

  4. 12 CFR 239.30 - Annual reports; books and records.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 4 2013-01-01 2013-01-01 false Annual reports; books and records. 239.30... Annual reports; books and records. (a) Annual reports to stockholders. A subsidiary holding company not... report, shall be transmitted by the subsidiary holding company to the appropriate Reserve Bank. (b) Books...

  5. 12 CFR 239.30 - Annual reports; books and records.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 4 2012-01-01 2012-01-01 false Annual reports; books and records. 239.30... Annual reports; books and records. (a) Annual reports to stockholders. A subsidiary holding company not... report, shall be transmitted by the subsidiary holding company to the appropriate Reserve Bank. (b) Books...

  6. 40 CFR 52.239 - Alternate compliance plans.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Section 52.239 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS.... (a) Alternative compliance plans (bubble plans) developed under the District rules listed below must... (bubble plans) developed under the District rules listed below are considered the applicable requirements...

  7. 40 CFR 52.239 - Alternate compliance plans.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Section 52.239 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS.... (a) Alternative compliance plans (bubble plans) developed under the District rules listed below must... (bubble plans) developed under the District rules listed below are considered the applicable requirements...

  8. 40 CFR 52.239 - Alternate compliance plans.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Section 52.239 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS.... (a) Alternative compliance plans (bubble plans) developed under the District rules listed below must... (bubble plans) developed under the District rules listed below are considered the applicable requirements...

  9. 40 CFR 52.239 - Alternate compliance plans.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Section 52.239 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS.... (a) Alternative compliance plans (bubble plans) developed under the District rules listed below must... (bubble plans) developed under the District rules listed below are considered the applicable requirements...

  10. 40 CFR 52.239 - Alternate compliance plans.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Section 52.239 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS.... (a) Alternative compliance plans (bubble plans) developed under the District rules listed below must... (bubble plans) developed under the District rules listed below are considered the applicable requirements...

  11. Chemical Treatment of US Department of Energy High Level and Low Level Waste to Obtain a Pure Radiochemical Fraction for Determination of Californium Alpha-Decay Content

    SciTech Connect

    Dewberry, R.

    2002-12-02

    We have developed a chemical separation technique that allows the radiochemical determination of the californium a-decay content in Department of Energy (DOE) high level wastes from the Hanford and Savannah River sites. The chemical separation technique uses a series of column extraction chromatography steps that use Eichrom Industries' lanthanide and actinide plus 3 oxidation state selective Ln-resin(R) and the transuranic selective plus 4 oxidation state TRU-resin(R) to obtain intermediate product phases in dilute nitric acid. The technique has been demonstrated on three types of authentic DOE high and low level waste samples. We obtain discrimination from Pu a-activity by a factor of over 200 and from Cm-244 a-activity by a factor approaching 1700. Californium recoveries are measured by addition of a Cf-249 spike and are in the range of 50 percent to 90 percent in the synthetic samples and are in the range of 1.4 percent to 48 percent for the authentic DOE waste samples.

  12. Ab initio full-potential study of mechanical properties and magnetic phase stability of californium monopnictides (CfN and CfP)

    NASA Astrophysics Data System (ADS)

    Amari, S.; Bouhafs, B.

    2016-09-01

    Based on the first-principles methods, the structural, elastic, electronic, properties and magnetic ordering of californium monopnictides CfX (X = P) have been studied using the full-potential augmented plane wave plus local orbitals (FP-L/APW + lo) method within the framework of density functional theory (DFT). The electronic exchange correlation energy is described by generalized gradient approximation GGA and GGA+U (U is the Hubbard correction). The GGA+U method is applied to the rare-earth 5f states. We have calculated the lattice parameters, bulk modulii and the first pressure derivatives of the bulk modulii. The elastic properties of the studied compounds are only investigated in the most stable calculated phase. In order to gain further information, we have calculated Young's modulus, shear modulus, anisotropy factor and Kleinman parameter by the aid of the calculated elastic constants. The results mainly show that californium monopnictides CfX (X = P) have an antiferromagnetic spin ordering. Density of states (DOS) and charge densities for both compounds are also computed in the NaCl (B1) structure.

  13. Use of polyethylene pellets in the design and construction of a storage safe, a transport vessel and a portable shield for californium-252

    SciTech Connect

    Sharma, S.

    1986-01-01

    A storage and shielding facility for 300 ..mu..g of Californium-252 sources was designed and constructed. Though the safe was in a permanent location, the fact that it consisted of a lead bucket surrounded by polyethylene pellets made it simple, movable and inexpensive. If need be, more quantities of Cf-252 could be added without altering the basic design and sacrificing the radiation protection guidelines. The measured radiation levels from 300 ..mu..g of stored Cf-252 in and around the storage vault were lower than the expected dose rates by a factor of 5. The measured radiation levels around the occupied environs of the facility were below the maximum permissible yearly dose of 500mrem for non-occupational workers. A transport vessel was designed and constructed to carry up to 50 ..mu..g of Californium-252 sources. It consisted of a standard 55 gallon steel drum on casters containing cylindrical lead shield surrounded by polyethylene pellets. The measured maximum surface dose rates on the drum and at one meter away were within the radiation protection guidelines and were less than the expected dose rates. A portable shield was designed and constructed to protect the body in afterloading operations and handling of the sources. It consisted of polyethylene pellets in an aluminum box and an attached 10 cm thick plexiglass eye shield. The simple design, with the ease of using polyethylene pellets can be extended to construct bedside shields.

  14. The measurement of 240Pu/ 239Pu and 238Pu/ 239Pu isotopic ratios by alpha-particle spectrometry

    NASA Astrophysics Data System (ADS)

    Raab, W.; Parus, J. L.

    1994-01-01

    The measurement of the alpha-activity ratio of {238Pu }/{( 239Pu + 240Pu) } is a routine practice in the determination of the isotopic composition of plutonium. However, measurement of the atomic ratio of 240Pu/ 239Pu by alpha-particle spectrometry is hampered due to insufficient energy resolution for the set of closely spaced peaks of these two isotopes. Passivated and implanted, planar silicon (PIPS) detectors have recently become available with an energy resolution of 10 keV or better, which significantly improves the deconvolution of spectra from plutonium samples. A set of alpha sources was prepared on porcelain disks by ignition, and the spectra were accumulated at a gain of approximately 1 keV per channel. The GRPANL computer program as developed by Lawrence Livermore National Laboratory was used to analyze the spectra. The isotopic ratios were measured in parallel by mass spectrometry. It was found that the agreement on the ratios of 240Pu/ 239Pu and 238Pu/ 239Pu between mass spectrometry and measurements by PIPS detectors was within ±2%. Half-life values were obtained from the literature (M. Lammer and O. Schwerer, Handbook of Nuclear Data for Safeguards, Rep. INDC(NDS)-248, IAEA, Vienna, 1991; ref. [5]). Other factors were also studied to improve the accuracy of the data. The alpha-particle emission probabilities of highly enriched 239Pu and 240Pu have been measured. The alpha-particle energies obtained in the fitting were in agreement with those in ref. [5]. The fitted energy values were used throughout this work.

  15. Low-Dose-Rate Californium-252 Neutron Intracavitary Afterloading Radiotherapy Combined With Conformal Radiotherapy for Treatment of Cervical Cancer

    SciTech Connect

    Zhang Min; Xu Hongde; Pan Songdan; Lin Shan; Yue Jianhua; Liu Jianren

    2012-07-01

    Purpose: To study the efficacy of low-dose-rate californium-252 ({sup 252}Cf) neutron intracavitary afterloading radiotherapy (RT) combined with external pelvic RT for treatment of cervical cancer. Methods and Materials: The records of 96 patients treated for cervical cancer from 2006 to 2010 were retrospectively reviewed. For patients with tumors {<=}4 cm in diameter, external beam radiation was performed (1.8 Gy/day, five times/week) until the dose reached 20 Gy, and then {sup 252}Cf neutron intracavitary afterloading RT (once/week) was begun, and the frequency of external beam radiation was changed to four times/week. For patients with tumors >4 cm, {sup 252}Cf RT was performed one to two times before whole-pelvis external beam radiation. The tumor-eliminating dose was determined by using the depth limit of 5 mm below the mucosa as the reference point. In all patients, the total dose of the external beam radiation ranged from 46.8 to 50 Gy. For {sup 252}Cf RT, the dose delivered to point A was 6 Gy/fraction, once per week, for a total of seven times, and the total dose was 42 Gy. Results: The mean {+-} SD patient age was 54.7 {+-} 13.7 years. Six patients had disease assessed at stage IB, 13 patients had stage IIA, 49 patients had stage IIB, 3 patients had stage IIIA, 24 patients had stage IIIB, and 1 patient had stage IVA. All patients obtained complete tumor regression (CR). The mean {+-} SD time to CR was 23.5 {+-} 3.4 days. Vaginal bleeding was fully controlled in 80 patients within 1 to 8 days. The mean {+-} SD follow-up period was 27.6 {+-} 12.7 months (range, 6-48 months). Five patients died due to recurrence or metastasis. The 3-year survival and disease-free recurrence rates were 89.6% and 87.5 %, respectively. Nine patients experienced mild radiation proctitis, and 4 patients developed radiocystitis. Conclusions: Low-dose-rate {sup 252}Cf neutron RT combined with external pelvic RT is effective for treating cervical cancer, with a low incidence of

  16. Californium-252 neutron brachytherapy combined with external pelvic radiotherapy plus concurrent chemotherapy for cervical cancer: a retrospective clinical study.

    PubMed

    Qian, Shen; Ye, Ling; Tian, Yun-Hong; Wang, Li-Gen; Huang, Zuo-Ping; Li, Feng; Hou, Bing; Song, Ni; Chen, Juan; Liu, Ying; Liu, Xiao; Zhou, Tao

    2017-02-28

    Cervical cancer is the sixth most common cancer in Chinese women. A standard treatment modality for cervical cancer is the combination of surgery, chemotherapy, external-beam radiotherapy and intracavitary brachytherapy. The aim of this study was to retrospectively assess the long-term treatment outcomes of patients with cervical cancer who were treated with californium-252 neutron brachytherapy combined with external-beam radiotherapy plus concurrent chemotherapy. We retrospectively analyzed the medical records of 150 patients with primary stages IB-IVB cervical cancer who received neutron brachytherapy combined with external-beam radiotherapy concurrently with cisplatin chemotherapy. All patients were followed up. Using an actuarial analysis, patient outcomes and treatment-related adverse effects were evaluated and compared. The median overall survival (OS) was 33.2 months. The 3-year progression-free survival rates for patients with stages I-II, III, and IV diseases were 81.0% (68/84), 65.0% (39/60), and 0% (0/6), respectively; the 3-year OS rates were 90.5% (76/84), 85.0% (51/60), and 16.7% (1/6), respectively. Vaginal bleeding was controlled within the median time of 4.0 days. One month after treatment, 97.3% of patients achieved short-term local control. The local recurrence rates for patients with stages I-II, III, and IV disease were 4.8% (4/84), 11.7% (7/60), and 33.3% (2/6), respectively, and the occurrence rates of distant metastasis were 16.7% (14/84), 25.0% (15/60), and 100.0% (6/6), respectively. Cancer stage, tumor size, and lymph node metastasis were identified as prognostic risk factors, but only lymph node metastasis was found to be an independent prognostic factor. The most common adverse effects during treatment were grades 1 and 2 irradiation-related proctitis and radiocystitis. For patients with cervical cancer, neutron brachytherapy combined with external-beam radiotherapy plus concurrent chemotherapy produces a rapid response and greatly

  17. Low-dose-rate californium-252 neutron intracavitary afterloading radiotherapy combined with conformal radiotherapy for treatment of cervical cancer.

    PubMed

    Zhang, Min; Xu, Hong-De; Pan, Song-Dan; Lin, Shan; Yue, Jian-Hua; Liu, Jian-Ren

    2012-07-01

    To study the efficacy of low-dose-rate californium-252 ((252)Cf) neutron intracavitary afterloading radiotherapy (RT) combined with external pelvic RT for treatment of cervical cancer. The records of 96 patients treated for cervical cancer from 2006 to 2010 were retrospectively reviewed. For patients with tumors ≤4 cm in diameter, external beam radiation was performed (1.8 Gy/day, five times/week) until the dose reached 20 Gy, and then (252)Cf neutron intracavitary afterloading RT (once/week) was begun, and the frequency of external beam radiation was changed to four times/week. For patients with tumors >4 cm, (252)Cf RT was performed one to two times before whole-pelvis external beam radiation. The tumor-eliminating dose was determined by using the depth limit of 5 mm below the mucosa as the reference point. In all patients, the total dose of the external beam radiation ranged from 46.8 to 50 Gy. For (252)Cf RT, the dose delivered to point A was 6 Gy/fraction, once per week, for a total of seven times, and the total dose was 42 Gy. The mean ± SD patient age was 54.7 ± 13.7 years. Six patients had disease assessed at stage IB, 13 patients had stage IIA, 49 patients had stage IIB, 3 patients had stage IIIA, 24 patients had stage IIIB, and 1 patient had stage IVA. All patients obtained complete tumor regression (CR). The mean ± SD time to CR was 23.5 ± 3.4 days. Vaginal bleeding was fully controlled in 80 patients within 1 to 8 days. The mean ± SD follow-up period was 27.6 ± 12.7 months (range, 6-48 months). Five patients died due to recurrence or metastasis. The 3-year survival and disease-free recurrence rates were 89.6% and 87.5 %, respectively. Nine patients experienced mild radiation proctitis, and 4 patients developed radiocystitis. Low-dose-rate (252)Cf neutron RT combined with external pelvic RT is effective for treating cervical cancer, with a low incidence of complications. Copyright © 2012 Elsevier Inc. All rights reserved.

  18. 40 CFR 81.239 - Upper Rio Grande Valley Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Air Quality Control Regions § 81.239 Upper Rio Grande Valley Intrastate Air Quality Control Region. The Upper Rio Grande Valley Intrastate Air Quality Control Region (New Mexico) consists of the... Quality Control Region. 81.239 Section 81.239 Protection of Environment ENVIRONMENTAL PROTECTION...

  19. 48 CFR 552.239-71 - Security Requirements for Unclassified Information Technology Resources.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Unclassified Information Technology Resources. 552.239-71 Section 552.239-71 Federal Acquisition Regulations... Text of Provisions and Clauses 552.239-71 Security Requirements for Unclassified Information Technology... Information Technology Resources (JUN 2011) (a) General. The Contractor shall be responsible for...

  20. 48 CFR 652.239-71 - Security Requirements for Unclassified Information Technology Resources.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Unclassified Information Technology Resources. 652.239-71 Section 652.239-71 Federal Acquisition Regulations... Provisions and Clauses 652.239-71 Security Requirements for Unclassified Information Technology Resources. As... Technology Resources (SEP 2007) (a) General. The Contractor shall be responsible for information...

  1. 48 CFR 1352.239-72 - Security requirements for information technology resources.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... information technology resources. 1352.239-72 Section 1352.239-72 Federal Acquisition Regulations System... Clauses 1352.239-72 Security requirements for information technology resources. As prescribed in 48 CFR 1339.270(b), insert the following clause: Security Requirements for Information Technology...

  2. 48 CFR 352.239-73 - Electronic information and technology accessibility.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... technology accessibility. 352.239-73 Section 352.239-73 Federal Acquisition Regulations System HEALTH AND... Clauses 352.239-73 Electronic information and technology accessibility. (a) As prescribed in 339.201-70(a), the Contracting Officer shall insert the following provision: Electronic and Information...

  3. 48 CFR 1252.239-70 - Security requirements for unclassified information technology resources.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... unclassified information technology resources. 1252.239-70 Section 1252.239-70 Federal Acquisition Regulations... of Provisions and Clauses 1252.239-70 Security requirements for unclassified information technology... Unclassified Information Technology Resources (APR 2005) (a) The Contractor shall be responsible...

  4. 17 CFR 230.239T - Temporary exemption for eligible credit default swaps.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... eligible credit default swaps. 230.239T Section 230.239T Commodity and Securities Exchanges SECURITIES AND... § 230.239T Temporary exemption for eligible credit default swaps. (a) Except as expressly provided in paragraph (b) and (c) of this section, the Act does not apply to any eligible credit default swap that...

  5. 17 CFR 230.239T - Temporary exemption for eligible credit default swaps.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... eligible credit default swaps. 230.239T Section 230.239T Commodity and Securities Exchanges SECURITIES AND... § 230.239T Temporary exemption for eligible credit default swaps. (a) Except as expressly provided in paragraph (b) and (c) of this section, the Act does not apply to any eligible credit default swap that...

  6. 48 CFR 1352.239-72 - Security requirements for information technology resources.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... information technology resources. 1352.239-72 Section 1352.239-72 Federal Acquisition Regulations System... Clauses 1352.239-72 Security requirements for information technology resources. As prescribed in 48 CFR 1339.270(b), insert the following clause: Security Requirements for Information Technology Resources...

  7. 48 CFR 1252.239-70 - Security requirements for unclassified information technology resources.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... unclassified information technology resources. 1252.239-70 Section 1252.239-70 Federal Acquisition Regulations... of Provisions and Clauses 1252.239-70 Security requirements for unclassified information technology... Unclassified Information Technology Resources (APR 2005) (a) The Contractor shall be responsible for...

  8. 48 CFR 652.239-71 - Security Requirements for Unclassified Information Technology Resources.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Unclassified Information Technology Resources. 652.239-71 Section 652.239-71 Federal Acquisition Regulations... Provisions and Clauses 652.239-71 Security Requirements for Unclassified Information Technology Resources. As... Technology Resources (SEP 2007) (a) General. The Contractor shall be responsible for information technology...

  9. 48 CFR 1352.239-72 - Security requirements for information technology resources.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... information technology resources. 1352.239-72 Section 1352.239-72 Federal Acquisition Regulations System... Clauses 1352.239-72 Security requirements for information technology resources. As prescribed in 48 CFR 1339.270(b), insert the following clause: Security Requirements for Information Technology Resources...

  10. 48 CFR 652.239-71 - Security Requirements for Unclassified Information Technology Resources.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Unclassified Information Technology Resources. 652.239-71 Section 652.239-71 Federal Acquisition Regulations... Provisions and Clauses 652.239-71 Security Requirements for Unclassified Information Technology Resources. As... Technology Resources (SEP 2007) (a) General. The Contractor shall be responsible for information technology...

  11. 48 CFR 1252.239-70 - Security requirements for unclassified information technology resources.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... unclassified information technology resources. 1252.239-70 Section 1252.239-70 Federal Acquisition Regulations... of Provisions and Clauses 1252.239-70 Security requirements for unclassified information technology... Unclassified Information Technology Resources (APR 2005) (a) The Contractor shall be responsible for...

  12. 48 CFR 652.239-71 - Security Requirements for Unclassified Information Technology Resources.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Unclassified Information Technology Resources. 652.239-71 Section 652.239-71 Federal Acquisition Regulations... Provisions and Clauses 652.239-71 Security Requirements for Unclassified Information Technology Resources. As... Technology Resources (SEP 2007) (a) General. The Contractor shall be responsible for information technology...

  13. 48 CFR 552.239-71 - Security Requirements for Unclassified Information Technology Resources.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Unclassified Information Technology Resources. 552.239-71 Section 552.239-71 Federal Acquisition Regulations... Text of Provisions and Clauses 552.239-71 Security Requirements for Unclassified Information Technology... Information Technology Resources (JAN 2012) (a) General. The Contractor shall be responsible for information...

  14. 48 CFR 1252.239-70 - Security requirements for unclassified information technology resources.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... unclassified information technology resources. 1252.239-70 Section 1252.239-70 Federal Acquisition Regulations... of Provisions and Clauses 1252.239-70 Security requirements for unclassified information technology... Unclassified Information Technology Resources (APR 2005) (a) The Contractor shall be responsible for...

  15. 48 CFR 552.239-71 - Security Requirements for Unclassified Information Technology Resources.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Unclassified Information Technology Resources. 552.239-71 Section 552.239-71 Federal Acquisition Regulations... Text of Provisions and Clauses 552.239-71 Security Requirements for Unclassified Information Technology... Information Technology Resources (JAN 2012) (a) General. The Contractor shall be responsible for information...

  16. 48 CFR 552.239-71 - Security Requirements for Unclassified Information Technology Resources.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Unclassified Information Technology Resources. 552.239-71 Section 552.239-71 Federal Acquisition Regulations... Text of Provisions and Clauses 552.239-71 Security Requirements for Unclassified Information Technology... Information Technology Resources (JAN 2012) (a) General. The Contractor shall be responsible for information...

  17. 48 CFR 3452.239-71 - Notice to offerors of Department security requirements.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Department security requirements. 3452.239-71 Section 3452.239-71 Federal Acquisition Regulations System... Text of Provisions and Clauses 3452.239-71 Notice to offerors of Department security requirements. As... unclassified information: Notice to Offerors of Department Security Requirements (MAR 2011) (a) The offeror...

  18. 48 CFR 3452.239-71 - Notice to offerors of Department security requirements.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Department security requirements. 3452.239-71 Section 3452.239-71 Federal Acquisition Regulations System... Text of Provisions and Clauses 3452.239-71 Notice to offerors of Department security requirements. As... unclassified information: Notice to Offerors of Department Security Requirements (MAR 2011) (a) The offeror...

  19. 48 CFR 3452.239-71 - Notice to offerors of Department security requirements.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Department security requirements. 3452.239-71 Section 3452.239-71 Federal Acquisition Regulations System... Text of Provisions and Clauses 3452.239-71 Notice to offerors of Department security requirements. As... unclassified information: Notice to Offerors of Department Security Requirements (MAR 2011) (a) The offeror...

  20. 48 CFR 3452.239-71 - Notice to offerors of Department security requirements.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Department security requirements. 3452.239-71 Section 3452.239-71 Federal Acquisition Regulations System... Text of Provisions and Clauses 3452.239-71 Notice to offerors of Department security requirements. As... unclassified information: Notice to Offerors of Department Security Requirements (MAR 2011) (a) The offeror...

  1. 48 CFR 352.239-73 - Electronic information and technology accessibility.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ...: Electronic and Information Technology Accessibility (January 2010) (a) Pursuant to Section 508 of the... technology accessibility. 352.239-73 Section 352.239-73 Federal Acquisition Regulations System HEALTH AND... Clauses 352.239-73 Electronic information and technology accessibility. (a) As prescribed in...

  2. 48 CFR 352.239-73 - Electronic information and technology accessibility.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ...: Electronic and Information Technology Accessibility (January 2010) (a) Pursuant to Section 508 of the... technology accessibility. 352.239-73 Section 352.239-73 Federal Acquisition Regulations System HEALTH AND... Clauses 352.239-73 Electronic information and technology accessibility. (a) As prescribed in...

  3. 48 CFR 352.239-73 - Electronic information and technology accessibility.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ...: Electronic and Information Technology Accessibility (January 2010) (a) Pursuant to Section 508 of the... technology accessibility. 352.239-73 Section 352.239-73 Federal Acquisition Regulations System HEALTH AND... Clauses 352.239-73 Electronic information and technology accessibility. (a) As prescribed in...

  4. 48 CFR 239.7102-2 - Compromising emanations-TEMPEST or other standard.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7102-2 Compromising emanations—TEMPEST or... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Compromising emanations-TEMPEST or other standard. 239.7102-2 Section 239.7102-2 Federal Acquisition Regulations System DEFENSE...

  5. 48 CFR 239.7102-2 - Compromising emanations-TEMPEST or other standard.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7102-2 Compromising emanations—TEMPEST or... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Compromising emanations-TEMPEST or other standard. 239.7102-2 Section 239.7102-2 Federal Acquisition Regulations System DEFENSE...

  6. 48 CFR 239.7102-2 - Compromising emanations-TEMPEST or other standard.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7102-2 Compromising emanations—TEMPEST or... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Compromising emanations-TEMPEST or other standard. 239.7102-2 Section 239.7102-2 Federal Acquisition Regulations System DEFENSE...

  7. 48 CFR 3452.239-70 - Internet protocol version 6 (IPv6).

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 7 2013-10-01 2012-10-01 true Internet protocol version 6 (IPv6). 3452.239-70 Section 3452.239-70 Federal Acquisition Regulations System DEPARTMENT OF EDUCATION... Clauses 3452.239-70 Internet protocol version 6 (IPv6). As prescribed in 3439.701, insert the...

  8. 48 CFR 352.239-72 - Security requirements for Federal information technology resources.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Federal information technology resources. 352.239-72 Section 352.239-72 Federal Acquisition Regulations... Provisions and Clauses 352.239-72 Security requirements for Federal information technology resources. As... Federal Information Technology Resources (January 2010) (a) Applicability. This clause applies whether...

  9. 48 CFR 352.239-73 - Electronic information and technology accessibility.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... technology accessibility. 352.239-73 Section 352.239-73 Federal Acquisition Regulations System HEALTH AND... Clauses 352.239-73 Electronic information and technology accessibility. (a) As prescribed in 339.201-70(a), the Contracting Officer shall insert the following provision: Electronic and Information...

  10. 48 CFR 652.239-71 - Security Requirements for Unclassified Information Technology Resources.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Unclassified Information Technology Resources. 652.239-71 Section 652.239-71 Federal Acquisition Regulations... Provisions and Clauses 652.239-71 Security Requirements for Unclassified Information Technology Resources. As... Technology Resources (SEP 2007) (a) General. The Contractor shall be responsible for information...

  11. 48 CFR 239.7102-2 - Compromising emanations-TEMPEST or other standard.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7102-2 Compromising emanations—TEMPEST or... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Compromising emanations-TEMPEST or other standard. 239.7102-2 Section 239.7102-2 Federal Acquisition Regulations System...

  12. 43 CFR 30.239 - How will the judge decide a petition for rehearing?

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 43 Public Lands: Interior 1 2010-10-01 2010-10-01 false How will the judge decide a petition for rehearing? 30.239 Section 30.239 Public Lands: Interior Office of the Secretary of the Interior INDIAN PROBATE HEARINGS PROCEDURES Formal Probate Proceedings Decisions in Formal Proceedings § 30.239 How...

  13. 40 CFR 23.9 - Timing of Administrator's action under the Atomic Energy Act.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 1 2011-07-01 2011-07-01 false Timing of Administrator's action under the Atomic Energy Act. 23.9 Section 23.9 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL JUDICIAL REVIEW UNDER EPA-ADMINISTERED STATUTES § 23.9 Timing of Administrator's action under the Atomic Energy Act. Unless the...

  14. 40 CFR 23.9 - Timing of Administrator's action under the Atomic Energy Act.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 1 2010-07-01 2010-07-01 false Timing of Administrator's action under the Atomic Energy Act. 23.9 Section 23.9 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL JUDICIAL REVIEW UNDER EPA-ADMINISTERED STATUTES § 23.9 Timing of Administrator's action under the Atomic Energy Act. Unless the...

  15. Results with the electron cyclotron resonance charge breeder for the 252Cf fission source project (Californium Rare Ion Breeder Upgrade) at Argonne Tandem Linac Accelerator System

    NASA Astrophysics Data System (ADS)

    Vondrasek, R.; Kondrashev, S.; Pardo, R.; Scott, R.; Zinkann, G. P.

    2010-02-01

    The construction of the Californium Rare Ion Breeder Upgrade, a new radioactive beam facility for the Argonne Tandem Linac Accelerator System (ATLAS), is nearing completion. The facility will use fission fragments from a 1 Ci C252f source; thermalized and collected into a low-energy particle beam by a helium gas catcher. In order to reaccelerate these beams, an existing ATLAS electron cyclotron resonance (ECR) ion source was redesigned to function as an ECR charge breeder. Thus far, the charge breeder has been tested with stable beams of rubidium and cesium achieving charge breeding efficiencies of 9.7% into R85b17+ and 2.9% into C133s20+.

  16. Results with the electron cyclotron resonance charge breeder for the {sup 252}Cf fission source project (Californium Rare Ion Breeder Upgrade) at Argonne Tandem Linac Accelerator System

    SciTech Connect

    Vondrasek, R.; Kondrashev, S.; Pardo, R.; Scott, R.; Zinkann, G. P.

    2010-02-15

    The construction of the Californium Rare Ion Breeder Upgrade, a new radioactive beam facility for the Argonne Tandem Linac Accelerator System (ATLAS), is nearing completion. The facility will use fission fragments from a 1 Ci {sup 252}Cf source; thermalized and collected into a low-energy particle beam by a helium gas catcher. In order to reaccelerate these beams, an existing ATLAS electron cyclotron resonance (ECR) ion source was redesigned to function as an ECR charge breeder. Thus far, the charge breeder has been tested with stable beams of rubidium and cesium achieving charge breeding efficiencies of 9.7% into {sup 85}Rb{sup 17+} and 2.9% into {sup 133}Cs{sup 20+}.

  17. Retention of 239Pu in the mouse lung and estimation of consequent dose following inhalation of sized 239PuO2.

    PubMed

    Morgan, A; Black, A; Moores, S R; Lambert, B E

    1984-08-01

    The retention of 239Pu in the lungs of SAS/4 mice following inhalation exposure to sized 239PuO2 particles is described. When the initial alveolar deposition (IAD) was less than 200 Bq, retention of 239Pu could be described by a two-component exponential expression, about 90% being cleared with a half-time of about 40 days and the remainder with a half-time of about 150 days. Similar amounts of 239Pu were retained up to 3 months with IADs greater than 800 Bq, but clearance was impaired thereafter, the half-time of the second component increasing to about 720 days. The retention of 239Pu was independent of the particle size of the administered 239PuO2. Studies of the retention of 239Pu by individual lobes indicated that there were intrinsic interlobar differences which were enhanced at higher IADs. Lung clearance was also studied by the measurement of 239Pu in feces excreted by groups of mice in the period immediately prior to sacrifice. The estimation of radiation dose to lung is discussed.

  18. Retention of /sup 239/Pu in the mouse lung and estimation of consequent dose following inhalation of sized /sup 239/PuO/sub 2/

    SciTech Connect

    Morgan, A.; Black, A.; Moores, S.R.; Lambert, B.E.

    1984-08-01

    The retention of /sup 239/Pu in the lungs of SAS/4 mice following inhalation exposure to sized /sup 239/PuO/sub 2/ particles is described. When the initial alveolar deposition (IAD) was <200 Bq, retention of /sup 239/Pu could be described by a two-component exponential expression, about 90% being cleared with a half-time of about 40 days and the remainder with a half-time of about 150 days. Similar amounts of /sup 239/Pu were retained up to 3 months with IADs>800 Bq, but clearance was impaired thereafter, the half-time of the second component increasing to about 720 days. The retention of /sup 239/Pu was independent of the particle size of the administered /sup 239/PuO/sub 2/. Studies of the retention of /sup 239/Pu by individual lobes indicated that there were intrinsic interlobar differences which were enhanced at higher IADs. Lung clearance was also studied by the measurement of /sup 239/Pu in feces excreted by groups of mice in the period immediately prior to sacrifice. The estimation of radiation dose to lung is discussed.

  19. Water vapor absorption in the atmospheric window at 239 GHz

    NASA Technical Reports Server (NTRS)

    Bauer, A.; Godon, M.; Carlier, J.; Ma, Q.

    1995-01-01

    Absolute absorption rates of pure water vapor and mixtures of water vapor and nitrogen have been measured in the atmospheric window at 239 GHz. The dependence on pressure as well as temperature has been obtained. The experimental data are compared with several theoretical or empirical models, and satisfactory agreement is obtained with the models involving a continuum; in the case of pure water vapor, the continuum contribution based upon recent theoretical developments gives good results. The temperature dependence is stronger than that proposed in a commonly used atmospheric transmission model.

  20. Neutron Resonance Parameters and Covariance Matrix of 239Pu

    SciTech Connect

    Derrien, Herve; Leal, Luiz C; Larson, Nancy M

    2008-08-01

    In order to obtain the resonance parameters in a single energy range and the corresponding covariance matrix, a reevaluation of 239Pu was performed with the code SAMMY. The most recent experimental data were analyzed or reanalyzed in the energy range thermal to 2.5 keV. The normalization of the fission cross section data was reconsidered by taking into account the most recent measurements of Weston et al. and Wagemans et al. A full resonance parameter covariance matrix was generated. The method used to obtain realistic uncertainties on the average cross section calculated by SAMMY or other processing codes was examined.

  1. Calculations of Nuclear Astrophysics and Californium Fission Neutron Spectrum Averaged Cross Section Uncertainties Using ENDF/B-VII.1, JEFF-3.1.2, JENDL-4.0 and Low-fidelity Covariances

    SciTech Connect

    Pritychenko, B.

    2015-01-15

    Nuclear astrophysics and californium fission neutron spectrum averaged cross sections and their uncertainties for ENDF materials have been calculated. Absolute values were deduced with Maxwellian and Mannhart spectra, while uncertainties are based on ENDF/B-VII.1, JEFF-3.1.2, JENDL-4.0 and Low-Fidelity covariances. These quantities are compared with available data, independent benchmarks, EXFOR library, and analyzed for a wide range of cases. Recommendations for neutron cross section covariances are given and implications are discussed.

  2. Calculations of Nuclear Astrophysics and Californium Fission Neutron Spectrum Averaged Cross Section Uncertainties Using ENDF/B-VII.1, JEFF-3.1.2, JENDL-4.0 and Low-fidelity Covariances

    NASA Astrophysics Data System (ADS)

    Pritychenko, B.

    2015-01-01

    Nuclear astrophysics and californium fission neutron spectrum averaged cross sections and their uncertainties for ENDF materials have been calculated. Absolute values were deduced with Maxwellian and Mannhart spectra, while uncertainties are based on ENDF/B-VII.1, JEFF-3.1.2, JENDL-4.0 and Low-Fidelity covariances. These quantities are compared with available data, independent benchmarks, EXFOR library, and analyzed for a wide range of cases. Recommendations for neutron cross section covariances are given and implications are discussed.

  3. AN INTEGRAL REACTOR PHYSICS EXPERIMENT TO INFER ACTINIDE CAPTURE CROSS-SECTIONS FROM THORIUM TO CALIFORNIUM WITH ACCELERATOR MASS SPECTROMETRY

    SciTech Connect

    G. Youinou; M. Salvatores; M. Paul; R. Pardo; G. Palmiotti; F. Kondev; G. Imel

    2010-04-01

    The principle of the proposed experiment is to irradiate very pure actinide samples in the Advanced Test Reactor (ATR) at INL and, after a given time, determine the amount of the different transmutation products. The determination of the nuclide densities before and after neutron irradiation will allow inference of effective neutron capture cross-sections. This approach has been used in the past and the novelty of this experiment is that the atom densities of the different transmutation products will be determined using the Accelerator Mass Spectroscopy (AMS) technique at the ATLAS facility located at ANL. It is currently planned to irradiate the following isotopes: 232Th, 235U, 236U, 238U, 237Np, 238Pu, 239Pu, 240Pu, 241Pu, 242Pu, 241Am, 243Am and 248Cm.

  4. Vertical distributions of radionuclides ((239+240)Pu, (240)Pu/(239)Pu, and (137)Cs) in sediment cores of Lake Bosten in Northwestern China.

    PubMed

    Liao, Haiqing; Bu, Wenting; Zheng, Jian; Wu, Fengchang; Yamada, Masatoshi

    2014-04-01

    Artificial radionuclides ((137)Cs, (239+240)Pu, (241)Pu, (241)Am) deposited in lacustrine sediments have been used for dating as well as radionuclide source identification. In the present work, we investigated the vertical distributions of (239+240)Pu and (137)Cs activities, (240)Pu/(239)Pu atom ratios, and (239+240)Pu/(137)Cs activity ratios in sediment cores collected from Lake Bosten, which is the lake closest to the Lop Nor Chinese Nuclear Weapon Test site in northwestern China. Uniformly high concentrations of (239+240)Pu and (137)Cs were found in the upper layers deposited since 1964 in the sediment cores, and these were controlled by the resuspension of soil containing radionuclides from the nearby land surface. As the Chinese nuclear tests varied remarkably in yield, the mixing of the tropospheric deposition from these tests and the stratospheric deposition of global fallout has led to a (240)Pu/(239)Pu atom ratio that is similar to that of global fallout and to a (239+240)Pu/(137)Cs activity ratio that is slightly higher than that of global fallout. However, a low (240)Pu/(239)Pu atom ratio of 0.080 and high (239+240)Pu/(137)Cs activity ratio of 0.087, significantly different from the global fallout values, were observed in one sediment core (07BS10-2), indicating the inhomogenous tropospheric deposition from the Chinese nuclear tests in Lake Bosten during 1967-1973. These results are important to understand the influence of the CNTs on the radionuclide contamination in Lake Bosten.

  5. 48 CFR 239.7102-3 - Information assurance contractor training and certification.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... ACQUISITION OF INFORMATION TECHNOLOGY Security and Privacy for Computer Systems 239.7102-3 Information... environment, network environment, or enclave); and (2) The information assurance training, certification...

  6. AMS of natural 236U and 239Pu produced in uranium ores

    NASA Astrophysics Data System (ADS)

    Wilcken, K. M.; Barrows, T. T.; Fifield, L. K.; Tims, S. G.; Steier, P.

    2007-06-01

    The rare isotopes 236U and 239Pu are produced naturally by neutron capture in uranium ores. Here we measure 236U and 239Pu by accelerator mass spectrometry (AMS) in the same ore samples for the first time. To ensure efficient extraction of both elements and isotopic equilibrium between the 239Pu in the ore and a 242Pu spike, we developed a new sample preparation protocol. AMS has clear advantages over previous methods because it achieves better discrimination against molecular interferences with higher sensitivity and shorter counting times. Measurements of 236U and 239Pu hold considerable promise as proxy indicators of neutron flux and uranium concentration.

  7. Gamma-ray Output Spectra from 239 Pu Fission

    DOE PAGES

    Ullmann, John

    2015-05-25

    The gamma-ray multiplicities, individual gamma-ray energy spectra, and total gamma energy spectra following neutron-induced fission of 239Pu were measured using the DANCE detector at Los Alamos. Corrections for detector response were made using a forward-modeling technique based on propagating sets of gamma rays generated from a paramaterized model through a GEANT model of the DANCE array and adjusting the parameters for best fit to the measured spectra. The results for the gamma-ray spectrum and multiplicity are in general agreement with previous results, but the measured total gamma-ray energy is about 10% higher. We found that a dependence of the gamma-raymore » spectrum on the gamma-ray multplicity was also observed. Finally, global model calculations of the multiplicity and gamma energy distributions are in good agreement with the data, but predict a slightly softer total-energy distribution.« less

  8. 16 CFR 239.2 - Disclosures in warranty or guarantee advertising.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... advertising. 239.2 Section 239.2 Commercial Practices FEDERAL TRADE COMMISSION GUIDES AND TRADE PRACTICE RULES... advertising. (a) If an advertisement mentions a warranty or guarantee that is offered on the advertised... mentions a warranty or guarantee that is offered on the advertised product, the advertisement...

  9. 12 CFR Appendix A to Part 239 - Mutual Holding Company Model Charter

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 4 2014-01-01 2014-01-01 false Mutual Holding Company Model Charter A Appendix... RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Pt. 239, App. A Appendix A to Part 239—Mutual Holding Company Model Charter FEDERAL MUTUAL HOLDING COMPANY CHARTER Section 1: Corporate...

  10. 12 CFR Appendix C to Part 239 - Mutual Holding Company Model Bylaws

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 4 2012-01-01 2012-01-01 false Mutual Holding Company Model Bylaws C Appendix... RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Pt. 239, App. C Appendix C to Part 239—Mutual Holding Company Model Bylaws MODEL BYLAWS FOR MUTUAL HOLDING COMPANIES The term “trustees” may...

  11. 12 CFR Appendix A to Part 239 - Mutual Holding Company Model Charter

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 4 2012-01-01 2012-01-01 false Mutual Holding Company Model Charter A Appendix... RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Pt. 239, App. A Appendix A to Part 239—Mutual Holding Company Model Charter FEDERAL MUTUAL HOLDING COMPANY CHARTER Section 1: Corporate...

  12. 12 CFR Appendix C to Part 239 - Mutual Holding Company Model Bylaws

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 4 2014-01-01 2014-01-01 false Mutual Holding Company Model Bylaws C Appendix... RESERVE SYSTEM (CONTINUED) MUTUAL HOLDING COMPANIES (REGULATION MM) Pt. 239, App. C Appendix C to Part 239—Mutual Holding Company Model Bylaws MODEL BYLAWS FOR MUTUAL HOLDING COMPANIES The term “trustees” may...

  13. 48 CFR 252.239-7012 - Title to telecommunication facilities and equipment.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Title to telecommunication... CLAUSES Text of Provisions And Clauses 252.239-7012 Title to telecommunication facilities and equipment. As prescribed in 239.7411(b), use the following clause: Title to Telecommunication Facilities...

  14. 48 CFR 252.239-7012 - Title to telecommunication facilities and equipment.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Title to telecommunication... CLAUSES Text of Provisions And Clauses 252.239-7012 Title to telecommunication facilities and equipment. As prescribed in 239.7411(b), use the following clause: Title to Telecommunication Facilities...

  15. 48 CFR 252.239-7012 - Title to telecommunication facilities and equipment.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Title to telecommunication... CLAUSES Text of Provisions And Clauses 252.239-7012 Title to telecommunication facilities and equipment. As prescribed in 239.7411(b), use the following clause: Title to Telecommunication Facilities...

  16. 48 CFR 252.239-7012 - Title to telecommunication facilities and equipment.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Title to telecommunication... CLAUSES Text of Provisions And Clauses 252.239-7012 Title to telecommunication facilities and equipment. As prescribed in 239.7411(b), use the following clause: Title to Telecommunication Facilities...

  17. 48 CFR 252.239-7012 - Title to telecommunication facilities and equipment.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Title to telecommunication... CLAUSES Text of Provisions And Clauses 252.239-7012 Title to telecommunication facilities and equipment. As prescribed in 239.7411(b), use the following clause: Title to Telecommunication Facilities...

  18. 48 CFR 239.7102-2 - Compromising emanations-TEMPEST or other standard.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Compromising emanations-TEMPEST or other standard. 239.7102-2 Section 239.7102-2 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF...

  19. 17 CFR 230.239 - Exemption for offers and sales of certain security-based swaps.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 17 Commodity and Securities Exchanges 2 2013-04-01 2013-04-01 false Exemption for offers and sales of certain security-based swaps. 230.239 Section 230.239 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION GENERAL RULES AND REGULATIONS, SECURITIES ACT OF 1933 Regulation...

  20. Determining Pu-239 content by resonance transmission analysis using a filtered reactor beam.

    SciTech Connect

    Klann, R. T.

    1998-11-25

    A novel technique has been developed at Argonne National Laboratory to determine the {sup 239}Pu content in EBR-II blanket elements using resonance transmission analysis (RTA) with a filtered reactor beam. The technique uses cadmium and gadolinium filters along with a {sup 239}Pu fission chamber to isolate the 0.3 eV resonance in {sup 239}Pu. In the energy range from 0.1 to 0.5 eV, the total microscopic cross-section of {sup 239}Pu is significantly larger than the cross-sections of {sup 238}U and {sup 235}U. This large difference in cross-section allows small amounts of {sup 239}Pu to be detected in uranium samples. Tests using a direct beam from a 250 kW TRIGA reactor have been performed with stacks of depleted uranium and {sup 239}Pu foils. Preliminary measurement results are in good agreement with the predicted results up to about two weight percent of {sup 239}Pu in the sample. In addition, measured {sup 239}Pu masses were in agreement with actual sample masses with uncertainties less than 3.8 percent.