The problem of absolute energy dosimetry with a calorimeter in the radiation field of a neutron generator is discussed. The following measurement methods were investigated: gamma and neutron dosimetry, and calorimetry. A calorimeter was developed, and a l...
National Technical Information Service (NTIS)
... Title : NEUTRON DOSIMETRY, SPECTROMETRY, AND NEUTRON ACTIVATION ANALYSIS. Descriptive Note : Final rept. ...
DTIC Science & Technology
... fluence of neutrons above ... RADIATION DAMAGE, *DOSIMETRY, *NEUTRON SPECTROMETERS ... SILICON, STANDARDS, NUCLEAR REACTORS ...
The neutron spectrum was measured using a combination of foil detectors. The absolute thermal flux was measured with gold foils using a beta-gamma coincidence counting technique; the epithermal spectrum was measured by taking cadmium ratios with three dif...
The report discusses neutron detection with respect to dosimetry and compares different thermoluminescent dosimetry materials for neutron dosimetry. Construction and calibration of a thermoluminescence albedo neutron dosemeter, developed by the authors, i...
The rationale and methods of the personnel neutron-dosimetry system used at SLAC are presented and discussed.
Energy Citations Database
... the measurement of neutron tissue does ... Descriptors : *NEUTRONS, *RADIATION MEASURING INSTRUMENTS, *DOSIMETRY, *RADIOBIOLOGY ...
... Neutron Dosimetry, Spectrometry, and ... They are mounted on fluorocarbon plastic to eliminate knock-on protons which create background problems ...
... Title : NEUTRON DOSIMETRY USING INELASTIC ... threshold detector that utilizes the inelastic ... SCATTERING, NEUTRONS, NUCLEAR ISOMERS ...
... detection, Measurement of fast neutron tissue dose ... Measurement of depth dose, Film dosimetry. ... NEUTRONS, FAST NEUTRONS, GAMMA RAYS ...
The most important concepts and development in individual neutron dosimetry are presented, especially the dosimetric properties of the albedo technique. The main problem in albedo dosimetry is to calibrate the dosemeter in the environs of each neutron sou...
... PROCEDURES FOR NEUTRON PHYSICS, CALCULATIONS, DOSIMETRY AND SPECTRUM ... FOR THE NUCLEAR INDUSTRY AND ...
... THE PHYSICS-DOSIMETRY-METALLURGY, DAMAGE ... EFFECT OF NEUTRON EXPOSURE TO ... COMMITTEE ON NUCLEAR TECHNOLOGY AND ...
... Accession Number : AD0823128. Title : SUMMARY OF NEUTRON AND GAMMA DOSIMETRY TECHNIQUES. Descriptive Note : Technical rept. ...
This paper was previously abstracted from the original language and appears in NSA, Vol. 7, as abstract No. 6566.
This edited transcript of a presentation on personnel neutron discusses the accuracy of present dosimetry practices, requirements, calibration, dosemeter types, quality factors, operational problems, and dosimetry for a criticality accident. 32 figs. (ACR)
... Accession Number : AD0616613. Title : AN ABSOLUTE MEASUREMENT OF THERMAL NEUTRON ALBEDO FOR SEVERAL MATERIALS. ...
Calorimeters used in absolute dosimetry of radioisotopes, for radium standards calibration, and in reactor dosimetry are briefly described. The method of using calorimeters and the results achieved in this field are reported. (auth)
Solid State Track Recorder (SSTR) Neutron Dosimeters have been developed for use in power reactors to provide information on the cumulative neutron dose received by the reactor pressure vessel during operation. The accumulation of neutron dose by the pressure vessel results in radiation damage in the form of steel embrittlement. In ...
... Procedures for dosimetry planning and ... Descriptors : *NEUTRON DETECTORS, *RADIATION ... DOSIMETERS, FISSION NEUTRONS, FLUXMETERS ...
... Descriptors : (*ORGANIC MODERATED REACTORS, REACTOR SYSTEM COMPONENTS), (*REACTOR SYSTEM COMPONENTS, NEUTRON ...
... aluminum threshold dosimetry technique has been adopted to measure neutron fluences at the Fort Hancock 14-MeV neutron source operated by ...
A scoping experiment to characterize the neutron field generated from a Light Water Reactor spent fuel assembly has been successfully completed. Solid State Track Recorder (SSTR) neutron dosimeters were exposed at the surface of a spent fuel assembly from a Pressurized Water Reactor. Acceptable track densities were obtained. From these SSTR ...
DOE Information Bridge
This study assesses the state of personnel neutron dosimetry at DOE facilities. A survey of the personnel dosimetry systems in use at major DOE facilities was conducted, a literature search was made to determine recent advances in neutron dosimetry, and several dosimetry ...
The current state-of-the-art in neutron personnel dosimetry is reviewed. Topics covered include dosimetry needs and alternatives, current dosimetry approaches, personnel monitoring devices, calibration strategies, and future developments. (ACR)
... bounds of neutron doses to ... EXPLOSION TESTING, *NEUTRONS, NUCLEAR WEAPONS, DEPARTMENT OF DEFENSE, DOSIMETRY, DOSAGE ...
... Typical instrumentation for dosimetry and monitoring are described ... the dose by the secondary proton field in ... lead foils to filter out the recoil protons. ...
... 35. Abstract : This report summarizes those techniques required to analyze standard neutron foil and gamma dosimetry. ...
... dosimetry (silver phosphate glass rods ... PLUTONIUM, NEPTUNIUM, URANIUM, SULFUR ... SILVER COMPOUNDS, PHOSPHATES, CARBON DIOXIDE ...
... Title : DOSIMETRY OF PROTON RADIATION IN SPACE. ... This distinguishes proton beams in space from neutron-produced recoil protons of reactors ...
Various metrics are formulated for the uncertainty of calculated neutron activities for dosimetry reactions. The correlations between the uncertainty metrics are examined. The uncertainty data are presented for the dosimetry reactions and can be used to g...
This method describes the use of solid-state track recorders (SSTR) for neutron dosimetry in light-water reactor (LWR) applications. These applications include pressure-vessel surveillance as well as reactor test-region irradiations. An ASTM standard procedure has already been written for SSTR dosimetry. This method can be regarded as ...
In 1983 a program of neutron dosimetry validation was undertaken at the TRIGA Mark F nuclear reactor at the Armed Forces Radiobiology Research Institute (AFRRI). Since the International Neutron Dosimetry Intercomparison (INDI) of 1973, the development of ...
A review is presented on the research and development of inorganic scintillators for position-sensitive thermal neutron detectors to be used at new spallation neutron sources. Furthermore some recent developments in the field of fast-neutron dosimetry will be discussed. PMID:15353615
PubMed
The 6Li(n,t) and 10B(n,?) cross sections are important neutron cross section standards. Precise knowledge of these cross sections is essential because they are often used as reference standards for obtaining the neutron fluence in investigations of the properties of neutron-induced reactions and for accurate determinations of ...
NASA Astrophysics Data System (ADS)
... Accession Number : ADA117308. Title : Tactical Gamma and Fast Neutron Dosimetry with Leuko Dye Optical Waveguides. ...
... Accession Number : ADA046020. Title : Symposium on Neutron Dosimetry in Biology and Medicine (3rd), 1977. Descriptive Note : Conference rept.,. ...
The rationale and methods of the personnel neutron-dosimetry system used at SLAC are presented and discussed. (ERA citation 08:045060)
... Descriptors : *DOSIMETRY, NUCLEAR RADIATION, THRESHOLDS( PHYSIOLOGY), NEUTRON FLUX, DOSE RATE, NUCLEAR EXPLOSION ...
... Dosimetry films were used to determine gamma-ray dose while Sievert ionization chambers were used to determine neutron dose. ...
... A kill and dale dosimetry program was ... Sulfur and gold neutron-flux detector readings are ... the gold-cadmium difference, are in neutrons ner square ...
... Descriptors : *X RAY FLASH, *DOSIMETRY, *NEUTRON FLUX, X RAYS, DOSAGE, GAMMA RAYS, DOSE RATE, NEUTRONS, RADIATION ...
Separate abstracts were prepared for 5 of the 15 papers presented. The 10 remaining papers were summaries of neutron dosimetry research work at various laboratories. (WHK)
... Accession Number : AD0639758. Title : EXPERIMENTAL FAST NEUTRON DOSIMETRY AND LD 50/30 STUDIES IN MICE. ...
... Title : STUDY OF THE ABSOLUTE FLUX AND ENERGY SPECTRUM OF COSMIC RAY NEUTRONS IN THE ATMOSPHERE. ...
To assess the effect of ionization chamber wall thickness on absolute neutron absorbed dose determinations, measurements were made of the charge collected by an A-150 tissue-equivalent plastic ionization chamber irradiated by a p(66)Be(49) neutron therapy beam as a function of chamber wall thickness both in air and in four different ...
... Descriptors : *FAST NEUTRONS, *NEUTRON FLUX, *NEUTRON DETECTORS, INTENSITY ... ALTITUDE, NEVADA, DOSIMETRY, RADIATION ...
The DT fusion neutron irradiation of February 13 to 17, 1978 is briefly outlined by the neutron dose record and the neutron fluences on 19 dosimetry foils.
The dosimetry of A-bomb survivors at Hiroshima and Nagasaki is discussed in light of the new dosimetry developed in 1980 by the author. The important changes resulting from the new dosimetry are the ratios of neutron to gamma doses, particularly at Hiroshima. The implications of these changes in terms of ...
The dosimetry of A-bomb survivors at Hiroshima and Nagasaki is discussed in light of the new dosimetry developed in 1980 by the author. The important changes resulting from the new dosimetry are the ratios of neutron to gamma doses, particularly at Hirosh...
As part of the measurement and analysis plan for the Dosimetry Experiment at the JOYO experimental fast reactor, neutron flux spectra analysis is performed using the NEUPAC (Neutron Unfolding Package) computer program. The code calculates the neutron flux...
Fast neutron activation using threshold reactions is the only neutron dosimetry method which offers complete discrimination against gamma-rays and preserves some information about the neutron energy. Conventional activation foil technique requires sensiti...
Significant progress was made in the study in identifying potential electret materials directly sensitive to neutron, but not photon, action, for the purpose of direct, simple, neutron-gamma discrimination. The Laboratoire d'Electricite Generale developed...
Recent progress has been made in the development of devices and techniques for the measurement and calibration of neutron personal dosimeters. The quantities and units used to express neutron dose equivalents are being improved and clarified. Therefore, it is expected that a number of remaining difficulties with neutron ...
Neutron dosimetry is a necessity that must be dealt with in order to ensure efficient monitoring of all personnel regarding radiology safety. Dosimetric variables are difficult to measure for they are dependent on complex functions evolving with the energ...
A personnel neutron dosimetry system has been developed based on the electrochemical etching of CR-39 plastic at elevated temperatures. The doses obtained using this dosimeter system are more accurate than those obtained using other dosimetry systems, esp...
The Dosimetry Applications Research (DOSAR) Group at the Oak Ridge National Laboratory (ORNL) has conducted sixteen Neutron Personnel Dosimetry Intercomparison Studies (PDIS) since 1974. During these studies dosimeters are mailed to DOSAR, exposed to low-...
... Neutron/proton dosage is consistent with ... METHODS, RATES, PROTONS, DOSAGE, GAMMA ... DOSIMETERS, LATITUDE, DOSIMETRY, NEUTRON ...
... Neutron/proton dosage is consistent with ... COUNTING METHODS, PROTONS, DOSAGE, GAMMA RAYS, NEUTRONS, DOSIMETRY, SCIENTIFIC ...
... Descriptors : *NEUTRONS, *DOSIMETRY, *RADIOTHERAPY, MATHEMATICAL MODELS, TISSUES ... MUSCLES, PLASTICS, ALPHA PARTICLES. ...
... Meth- ods of fast neutron dosimetry based on blackening are ... and measuring the range of proton tracks in ... to the number of recoil protons times the ...
... AIR, DETECTORS, DOSIMETRY, ESTIMATES, GAMMA ... CARLO METHOD, NEUTRONS, NUCLEAR RADIATION ... WALLS, NEUTRON IRRADIATION ...
... Descriptors : *NEUTRON RADIOGRAPHY, NONDESTRUCTIVE ... EQUIPMENT, NEUTRONS, PHOTOGRAPHIC ... DOSIMETRY, X RAY APPARATUS. ...
In this work, CR-39 track detectors have extensively been used in the determination of fast neutron fluence-to-dose factor. The registration efficiency, ?, of CR-39 detectors for fast neutrons was calculated using different theoretical approaches according to each mode of neutron interaction with the constituent atoms (H, C and O) of ...
... ALLOYS, ABSTRACTS, NUCLEAR EXPLOSION ... IONIZING RADIATION, NEUTRONS, RADIOACTIVE ... LEVELS, HEALTH PHYSICS, DOSIMETRY. ...
