Techniques for spectral and intensity calibrations of laser-plasma VUV instrumentation are described. A flexible laboratory x-ray station is shown to yield creditable results. (ERA citation 09:029921)

using time-resolved laser-induced fluorescence in the UV and VUV on an atomic beam of boron. The accurate lifetimes provide a base for improved ...

... Title : AN ACCURATE LABORATORY TEST SYSTEM USING COMMERCIAL EQUIPMENT FOR EDDY CURRENT MEASUREMENTS. ...

We describe the design and performance of the Los Alamos VUV synchrotron radiation beamline, U3C, on the VUV ring of the National Synchrotron Light Source at Brookhaven National Laboratory. The beamline uses separate function optics to collect and focus the horizontally and vertically diverging beam. The monochromator is a grazing ...

The overall objective of this study is to establish vacuum ultraviolet photoionization-MS and VUV pulsed EI-MS as useful tools for a simpler and more accurate direct mass spectrometric measurement of a broad range of hydrocarbon compounds in complex mixtures for ultimate application to the study of the kinetics of coal hydrogenation and pyrolysis ...

A compact excimer lamp constructed with a piezoelectric transformer (PT) has been developed in our laboratory. This excimer lamp is designed based on the excitation of a dielectric barrier discharge (DBD) in a He-Xe mixture generated by the PT, which is driven with low applied voltages of several tens of volts (15-45V). Vacuum ultraviolet (VUV) radiated ...

Low-pressure glow discharge plasmas are increasingly used as an effective method for the surface modification of polymers; they can also serve in the laboratory to simulate low Earth orbital environment (LEO). Although Vacuum-Ultra-violet (VUV, ? < 200 nm) is an important component of plasma environment, only few studies have focused on its effects so ...

We report preliminary measurements of Fe III spectra in the 1150 to 2500 � wavelength interval. Spectra have been recorded with an iron-neon Penning discharge lamp (PDL) between 1600 and 2500� at Imperial College (IC) using high resolution Fourier (FT) transform spectroscopy. These FT spectrometer measurements were extended beyond 1600� to 1150� using high-resolution grating spectroscopy ...

The degradation of porous low-k materials, like SiOCH, under plasma processing continues to be a problem in the next generation of integrated-circuit fabrication. Due to the exposure of the film to many species during plasma treatment, such as photons, ions, radicals, etc, it is difficult to identify the mechanisms responsible for plasma-induced damage. Using a vacuum beam apparatus with a ...

Single aerosol particles of ethylene glycol and oleic acid are vaporized on a heater at temperatures between 500 and 700 K, and the resulting vapor plume is ionized by a 10.5-eV vacuum ultraviolet (VUV) laser. The mass spectra are compared to those obtained by CO2 laser vaporization followed by VUV laser ionization. The relative intensities of the parent ...

Percussion drilling of blind holes and vias in Kapton film was investigated using Q-switched solid state lasers operating at UV (355nm) and VUV (266nm) wavelengths. Holes were analyzed using different methods such as scanning electron microscopy (SEM) and surface profilometry. Ablation rates for the two wavelengths are compared. No abrupt thresholds were found and there was no ...

KMS Fusion has assembled a laboratory soft x-ray calibration system, which enables a quick response to the needs of laser-plasma experiments. This calibration source has become flexible and capable, presently allowing calibrations in wavelength and intens...

Laboratory, and Steven Hulbert of the NSLS, BNL during experiments conducted at ..... 542-8. 4. NASA Memorandum from J. Barth to P. Hansen, July 7, 1997. ...

Papers are presented from each of the four sessions of the conference. The titles of the four sessions are as follows: VUV Calibration Standards; Laboratory Calibration Techniques; Calibrations of FUV Instruments; Calibrations of EUV Instruments.

Jan 22, 2011 ... Lyman atomic line radiation Zeeman effect VUV polarization vacuum ultraviolet � Lyman-a Radiation � Lyman-alpha radiation atomic hydrogen ...

high performance SHS's. In a traditional FTS based on a Michelson ... SHS will have VUV capability, but it is limited to wavelengths above the CaF2 transmission .... reflection, high resolution SHS with very broad spectral coverage. ...

Molecular contamination degrades sensitive spacecraft surfaces and can adversely affect the useful life of a spacecraft. In order to accurately predict spacecraft performance and end of life, an understanding of the primary mechanisms and processes involved in the deposition and "fixing" of molecular contaminants is necessary. The objective for this research effort has been to ...

A compact, versatile device for VUV beam characterization is presented. It combines the functionalities of a VUV spectrometer and a VUV beam profiler in one unit and is entirely supported by a standard DN200 CF flange. The spectrometer employs a silicon nitride transmission nanograting in combination with a micro-channel plate based ...

This dissertation describes the use of a new molecular beam apparatus designed to use tunable VUV synchrotron radiation for photoionization of the products from scattering experiments. The apparatus was built at the recently constructed Advanced Light Source at Lawrence Berkeley National Laboratory, a third generation 1-2 GeV synchrotron radiation source. ...

Samples returned from the Genesis and Stardust missions of NASA's Discovery Program require quantitative analysis at sensitivities unobtainable with present instruments. This has driven development of a new generation of instruments for laser-post-ionization secondary neutral mass spectrometry (laser-SNMS). Construction of a prototype time-of-flight (TOF) SNMS instrument has been completed ...

Driven by the needs for microlithography, powerful sources for extreme ultraviolet (EUV) radiation at wavelengths around 13 nm are currently under development. For absolute photon flux measurements of highly intense and extremely pulsed radiation in the VUV and EUV spectral range, a detector system based on the photoionization of rare gases has been developed. Due to its ...

The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. The infrared (IR) spectrum of propyne in the region of ...

The use of the synchrotron radiation (SR) in the vacuum ultraviolet (VUV) spectroscopy and radiometry opens new doors for a researcher. In this connection a consideration of SR characteristics of small size specialized SR sources, which can be available even in single laboratories, is given below. "TROLL" is an electron synchrotron with a cyclotron ...

Selective laser ionization techniques are used in our laboratory for the measurement of concentration profiles of radical intermediates in the combustion of chlorinated hydrocarbon flames. A new ultrasensitive detection technique, made possible with the advent of tunable VUV laser sources, enables the selective near-threshold photoionization of all radical ...

Three types of new monochromators based on the new mounting of concave grating by Singh-Majumdar (SM) are described. These monochromators are very compact and simple in operation, fulfilling the requirements of a monochromator in a space telescope in the VUV region. It is found theoretically (by geometric optics theory of concave diffraction grating given by Beutler and ...

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A compact, versatile device for vacuum ultraviolet (VUV) beam characterization is presented. It combines the functionalities of a VUV spectrometer and a VUV beam profiler in one unit and is entirely supported by a standard DN200 CF flange. The spectrometer employs a silicon nitride transmission nanograting in combination with a ...

This report describes (1) theory, design and performance of a CO2 TEA laser with VUV preionization delivering typically 25J pulses of duration 0.1 microsecond and beam cross section 20 per sq cm; (2) the production of clouds in the laboratory by adiabatic...

Candidate Space Station Freedom radiator coatings including Z-93, YB-71, anodized aluminum and SiO(x) coated silvered Teflon have been characterized for optical properties degradation upon exposure to environments containing atomic oxygen, vacuum ultraviolet (VUV) radiation, and/or silicone contamination. YB-71 coating showed a blue-gray discoloration, which has not been ...

Vacuum ultraviolet (VUV) light scattering from ultrafine silica particles is studied with an aerosol instrument recently established at the Advanced Light Source (ALS) in Berkeley. Silica particles, size-selected by a differential mobility analyzer, are introduced into vacuum through a set of aerodynamic lenses to form a particle beam. The scattered photons from the crossing ...

Context. The study of the chemical reactivity in interstellar ices in astrophysical environments is an important tool for understanding the origin of the organic matter in molecular clouds, in protoplanetary disks, and possibly, as a final destination, in our solar system. The laboratory simulations of the reactivity in ice analogs provide important information for ...

A new laser based diagnostic, Vacuum Ultraviolet Photoionization Mass Spectrometry (VUV-PIMS) has been developed and applied to several laboratory flames. VUV- PIMS utilizes nonlinear optical techniques to convert visible laser radiation into narrow band, broadly tunable VUV radiation (120-160 nm). This light is ...

The authors propose to investigate the dynamics of plasmas in the warm dense matter (WDM) regime on ultra-short time scales. Accessible plasma conditions are in the density range of n = 10{sup 20} - 10{sup 23} cm{sup -3} and at moderate temperatures of T = 1 - 20 eV. These plasmas are of importance for laboratory astrophysics, high energy density science and inertial ...

The Flare Irradiance Spectral Model (FISM) is an empirical model of the solar irradiance spectrum from 0.1 to 190 nm at 1 nm spectral resolution and on a 1-minute time cadence. The goal of FISM is to provide accurate solar spectral irradiances over the vacuum ultraviolet (VUV: 0-200 nm) range as input for ionospheric and thermospheric models. The FISM ...

Cyanoacetylene (HC3N) and diacetylene (C4H2) play an important role in the photochemistry of Titan's atmosphere, in part because of their strong absorption between 110 and 180 nm. Accurate photoabsorption cross-sections at temperatures representative of Titan's atmosphere are required to interprete Cassini observations and to calculate photolysis rates used in photochemical ...

Laboratory studies of the emission spectra of multiply (two to five times) charged atomic ions are being carried out in the VUV wavelength region (50-300nm) motivated by the recent space missions (HST, SOHO and FUSE). The spectrogrammes are produced using vaccum spark sources and high resolution normal incidence vacuum spectrograph. The precision of ...

Laboratory low-pressure cold plasma discharges, which are used to simulate some hot core environments in the star-forming region, have been investigated by employing single-photon vacuum ultraviolet (VUV) photoionization mass spectrometry. Enols with two to four carbon atoms were detected in plasma discharges of alcohols, indicating that enols can result ...

Spectroscopic instrumentation is one of the keys to the exploration of high-temperature plasmas. The electron beam ion trap (EBIT) can serve as a tool for precise studies of highly charged ions in the laboratory and can help in setting spectroscopic standards for plasma studies. Recent efforts have focused on investigating the EUV, vacuum ultraviolet ...

The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. By using a high-resolution single mode infrared-optical ...

An aerosol apparatus has been coupled to the ChemicalDynamics Beamline of the Advanced Light Source at Lawrence BerkeleyNational Laboratory. This apparatus has multiple capabilities for aerosolstudies, including VUV light scattering, photoelectron imaging, and massspectroscopy of aerosols. By utilizing an inlet system consisting of a200 mu m orifice nozzle ...

An aerosol apparatus has been coupled to the Chemical Dynamics Beamline of the Advanced Light Source at Lawrence Berkeley National Laboratory. This apparatus has multiple capabilities for aerosol studies, including vacuum ultraviolet (VUV) light scattering, photoelectron imaging, and mass spectroscopy of aerosols. By utilizing an inlet system consisting of ...

... While our laboratory predominantly uses a spectrophotometric method for the determination of carboxyhemoglobin (COHb), we consider it ...

Some of the considerations for an optimal design of a storage ring are outlined and the choices of parameters for the National Synchrotron Light Source (NSLS) at Brookhaven National Laboratory (BNL) are presented. Also the policy for utilization of NSLS beam lines is described for both the 0.7 GeV (VUV) storage ring and the 2.5 GeV (X-ray) storage ring.

The use of the C (mrad/Amp) conversion factors of the orbit corrector magnets in the sudy of the symmetry properties of a circular accelerator or storage ring, and in the determination of the ratios of the ..beta..-functions at corrector locations is discussed. Measurements obtained for the VUV and x-ray rings of the NSLS at Brookhaven National Laboratory ...

The magnetic structure and spectral properties of a 7.5-cm, 30-period hybrid undulator are described. The device will be installed at the U5 port of the VUV storage ring at Brookhaven National Laboratory and will be a tunable source of very high brilliance soft x-ray radiation over the range of 13 from approximately 150 eV.

A technique of focusing the heating radiation was investigated, which makes it possible to produce an extended (under laboratory conditions, up to 1 m and over) plasma column and enables an easy output of VUV radiation. A plane solid-state target in vacuum was arranged along the caustic of a conic lens (axicon), which focused the laser beam. An analytic ...

As part of a national multi-institutional Materials Research Group (MRG), Argonne National Laboratory had the responsibility, under a prime contract with the U.S. Department of Energy, of obtaining a Permanent Magnet Hybrid undulator to be used on the U5 Beam Line on the VUV Ring at the National Synchrotron Light Source (NSLS). The procurement involved ...

The use of supersonic molecular beams in photoionization mass spectroscopy and photoelectron spectroscopy to assist in the understanding of photoexcitation in the vacuum ultraviolet is described. Rotational relaxation and condensation due to supersonic expansion were shown to offer new possibilities for molecular photoionization studies. Molecular beam photoionization mass spectroscopy has been ...

Characterization of optical materials and components is one of the major tasks for the Radiometry Laboratory of the Physikalisch-Technische Bundesanstalt, Germany's national metrology institute, at the synchrotron radiation source BESSY II. Using spectrally dispersed synchrotron radiation, reflectometry measurements have been performed on highly pure CaF2 crystals in the ...

Solar UV radiation is a major source of energy for chemical evolution of organic materials in the Solar System. Therefore studies on the photostability of organic compounds in extraterrestrial environments are of prime importance for the understanding of the extraterrestrial origin of organic materials on Earth. A series of organic samples have been photolysed in Earth orbit during the ESA BIOPAN ...

We report a new experimental set-up consisting in the synchronization of 74.9094 MHz pulses from a mode-locked Ar{sup +} laser with 8.32 MHz pulses of vacuum ultraviolet (VUV) synchrotron radiation from the Super-ACO storage ring of the Laboratorie pour l'Utilisation du Rayonnement Electromagnetique (LURE). The capabilities of the set-up are ...

This report discusses research conducted at the National Synchrotron Light Source in the following areas: atomic and molecular science; energy dispersive diffraction; lithography, microscopy, and tomography; nuclear physics; scattering and crystallography studies of biological materials; time resolved spectroscopy; UV photoemission and surface science; x-ray absorption spectroscopy; x-ray ...

The spectrum of Al VII is re-examined in the vuv. A laser-produced plasma is used as a light source.

... Title : FLUORESCENCE SPECTRA RESULTING FROM VUV PROTON IMPACT ON COS. Descriptive Note : Technical rept.,. ...

For the first time, a vacuum ultraviolet (VUV) telescope can be built to rapidly observe the magnetic fields, plasma flows, and heating events in the Sun�s atmosphere. These observations can provide key data for space weather models. The vacuum ultraviolet region allows remote sensing of the upper levels of the solar atmosphere where the magnetic field dominates the physics. ...

For the first time, a vacuum ultraviolet telescope can be built to observe magnetic fields, plasma flows, and heating events in the Sun's atmosphere. These observations can provide key data for space weather models. The vacuum ultraviolet (VUV) region allows remote sensing of the upper levels of the solar atmosphere where the magnetic field dominates the physics. A ...

Electron-molecule collisions play an important role in the nitrogen-rich upper atmospheres of Titan, Triton, and Earth. Modeling these processes requires accurate laboratory data. To this end, measurements and analyses of recent electron impact excitation experiments with molecular nitrogen are presented. Absolute excitation cross sections for transitions ...

The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. The vacuum ultraviolet (VUV) laser ...

An accurate calibration method in which an ac-modulated polarizing undulator is used for polarization modulation spectroscopy such as circular dichroism (CD) and linear dichroism (LD) has been proposed and successfully applied to vacuum ultraviolet (vuv) CD and LD spectra measured at beamline BL-5B in the electron storage ring, TERAS, at AIST. This ...

... accurate and replicable from a competent laboratory: pH value � chemistry grade pH paper accurate to ±0.05 or calibrated equipment; ...

The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. By preparing methyl bromide (CH�Br) in selected ...

Katja Honkavaara, TTF/VUV-FEL meeting, 21.02.2006 TTF/VUV-FEL meeting 21.02.2006 Overview + QE measurements #12;Katja Honkavaara, TTF/VUV-FEL meeting, 21.02.2006 Accelerator studies in KW 9-14 � Priority on ILC and XFEL related studies (not VUV-FEL) � VUV-FEL benefits directly or indirectly ...

A new low noise miniaturized multichannel bolometer module for absolute measurements in the VUV and soft x spectral ranges is described. Highly integrated four-channel modules (2{times}3.3{times}1.5 cm{sup 3}) each comprising four independent ac-excited (50 kHz) metal resistor bolometer bridges were successfully tested on a large tokamak (Tore Supra in Cadarache) and on an ...

Biomass Compositional Analysis Laboratory Providing detailed and accurate characterization of the chemical composition of biomass feedstocks, intermediates, and products NREL is a...

The falls were preceded by an appearance of a cloud and detonations, frightening local residents. This is an eye witness account that provided accurate ...

Since the time of the pharaohs in ancient Egypt, the water levels of the Nile were accurately measured. These are now a unique resource for climatologists. ...

Since the time of the pharaohs in ancient Egypt, the water levels of the Nile were accurately measured. These are now a unique resource for climatologists. ...

PARCS will make even more accurate atomic time available to everyone, ... PARCS is being developed by the Jet Propulsion Laboratory with principal ...

... of laboratory methods (or scientific regulatory information ... procedures, that the reported methods or techniques are ... and accurate for use as a regulatory method. ...

... instrument calibrations are usually obtained by usag a very accurate laboratory barometer. The altitude scales on these barometers are based on ...

At Sandia National Laboratories in Albuquerque, NM, accurate and precise data are essential for managing our environment programs. Because we seek high credibility of laboratory data, a study was conducted to determine the management of measurement accuracy and precision by commercial laboratories. This article ...

Fundamental research on the combustion of halogenated organic compounds with emphasis on reaction pathways leading to the formation of chlorinated organic compounds and the development of continuous emission monitoring methods will assist in DOE efforts in the management and control of hazardous chemical wastes. Selective laser ionization techniques are used in the laboratory ...

This document contains an overview of the participating DOE Laboratory beam line interests and the projected science to be addressed on these beam lines, both at new and existing synchrotron facilities. The scientific programs associated with present and planned synchrotron research by DOE Laboratories are discussed in chapters titled ...

This document contains an overview of the participating DOE Laboratory beam line interests and the projected science to be addressed on these beam lines, both at new and existing synchrotron facilities. The scientific programs associated with present and planned synchrotron research by DOE Laboratories are discussed in chapters titled ...

Laboratory data on the spectra of CO adsorbed on small MgO particles show that CO adsorption leads to a weakening of the 220 nm band together with a shift of this band to shorter wavelengths. CO adsorption also results in the formation of a cyclic CO carbon ion that absorbs at 2.15 ?m-1. It is shown that this band provides a close match to a major component of the very broad ...

A plane mirror and two strongly curved plane elliptical mirrors comprising the refocusing system downstream the plane grating monochromator at FLASH in DESY have been characterized with the Nanometer Optical Component Measuring Machine at the BESSY-II Optics Laboratory of the Helmholtz Zentrum Berlin. Based on the measurement results the two elliptical cylinders were optimized ...

A plane mirror and two strongly curved plane elliptical mirrors comprising the refocusing system downstream the plane grating monochromator at FLASH in DESY have been characterized with the Nanometer Optical Component Measuring Machine at the BESSY-II Optics Laboratory of the Helmholtz Zentrum Berlin. Based on the measurement results the two elliptical cylinders were optimized ...

We describe a Fourier transform (FT) spectrometer designed to operate down to 60 nm (20 eV) on a synchrotron radiation beamline for high resolution absorption spectrometry. As far as we know, such an instrument is not available below 140 nm mainly because manufacturing accurate and efficient beam splitters remains a major problem at these wavelengths, especially if a wide ...

We describe a Fourier transform (FT) spectrometer designed to operate down to 60 nm (20 eV) on a synchrotron radiation beamline for high resolution absorption spectrometry. As far as we know, such an instrument is not available below 140 nm mainly because manufacturing accurate and efficient beam splitters remains a major problem at these wavelengths, especially if a wide ...

We present the first results from a new instrument which is designed to work at very high resolution in the infrared spectral region but whose principles can be used in the vuv/soft-x ray region. The instrument is based on an interferometer. For the vuv/s...

This book carries papers presented at a workshop 'Future Prospects for Studies in the VUV-SX Region' held on March 22 and 23, 1989. The workshop focussed particularly on the promotion of research in the VUV and soft X-ray regions. Three sessions were held...

Accurate ionization energies (IE`s) for molecular species are used for prediction of chemical reactivity and are of fundamental importance to chemists. The IE of a gaseous molecule can be determined routinely in a photoionization or a photoelectron experiment. IE determinations made in conventional photoionization and photoelectron studies have uncertainties in the range of ...

This report describes progress on the first year of a research program on the infrared radiation of air plasmas conducted in the High Temperature Gasdynamics Laboratory at Stanford University. This program is intended to investigate the masking of infrared signatures by the air plasma formed behind the bow shock of high velocity missiles. To this date, the radiative emission ...

TESLA Test Facility und VUV-FEL TESLA Test Facility und VUV-FEL Am 17.11.2002 wurde der erfolgreiche Betrieb von TTF1 mit seinen richtungsweisenden Ergebnissen f�r den VUV-FEL in TESLA Technologie Be- schleunigerkomponenten, gefolgt vom Aufbau des VUV-FEL in TESLA-Technologie. Da das finanzi- elle

Freie-Elektronenlaser VUV-FEL Freie-Elektronenlaser VUV-FEL Zum Jahreswechsel wurde die bei PITZ pr�parierte und konditionierte Kanone im VUV-FEL Tunnel ein- gebaut. Anschlie�end folgte im Januar der Einbau Wartungstag beim VUV-FEL eingef�hrt. Die Parallelisierung der Arbeiten f�r den Maschinen

Feb 3, 2003 ... Description: Combines VUV radiation with thermal cycling to expose materials to realistically simulated orbiting spacecraft environment. ...

The magnet parameters and the spectrum of the emitted radiation are considered for an undulator to be used in the VUV-Ring of the NSLS.

Because the wavelength sensitivity of VUV damage is not well known for most materials, Glenn's VUV facility uses a broad-spectrum deuterium lamp with a ...

... Title : SPECTRUM OF AL VII IN THE VUV, IN: OPTICAL SOCIETY OF AMERICA JOURNALVOL65, NO2, P197-198. Corporate ...

Measurements of solar VUV irradiance represent a valuable data set, with historically extensive ... Four of the most widely used solar VUV irradiance models ...

A VUV and soft X-ray light source based on spontaneous anti-Stokes scattering from atomic population

... Accession Number : ADA070337. Title : Anti-Stokes Emission as a VUV and Soft X-Ray Source,. Corporate Author : STANFORD ...

... Title : A COMPACT 50-J CO SUB 2 TEA LASER WITH VUV PREIONIZATION AND THE DISCHARGE MECHANISM, IN: APPLIED PHYSICS ...

Extensive simulations of Tokamak disruptions have provided a picture of material erosion that is limited by the transfer of energy from the incident plasma to the armor solid surface through a dense vapor shield. Radiation spectra were recorded in the VUV and in the visible at the Efremov Laboratories on VIKA using graphite targets. The ...

We simulate in laboratory, the chemical evolution of the interstellar ices containing CH3OH, H2CO, HCOOH, NH3, CO2, H2O molecules. These ice analogs are submitted to hydrogenation, VUV irradiation or thermal processes which alter the ice composition and which leave after sublimation of volatile species a refractory residue analog of cometary grains. This ...

We describe a new grating chamber and scan drive which has been designed, built, and tested by Physical Sciences Laboratory of the University of Wisconsin for the new high flux, high-resolution spectroscopy branch line of the TOK hybrid wiggler/undulator on the NSLS VUV ring. The chamber will contain spherical gratings to be used in the Spherical Grating ...

The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. By using a high-resolution infrared (IR) laser to prepare ...

The spatial brightness profiles of Ar and Kr ions have been measured during a set of experiments in which these gases were puffed into FTU (Frascati Tokamak Upgrade) and Alcator C-Mod tokamak plasmas. These profiles were measured by spatially scanning photometrically calibrated vuv and x-ray spectrometers covering 3 to 1700 Aa on a shot to shot basis. Several simulations of ...

An x-ray beam position monitor has been developed and is currently operational at the NIST beamline X-24A of the National Synchrotron Light Source, Upton, NY. It was developed to accurately measure the vertical position of the synchrotron beam and to allow precise positioning of beamline optics. It is an area type monitor positioned 5.6 meters from the Tangent Point and ...

In this work we present progress on the long-term evaluation of optical materials for 157-nm lithographic applications. We review the unique metrology capabilities that have been developed for accurately assessing optical properties of samples both online and offline, utilizing VUV spectrophotometry with in-situ lamp-based cleaning. We review the current ...

The CSIR National Metrology Laboratory (CSIR-NML) is the custodian of the South African national measurement standards. The Time and Frequency (TF) Laboratory is responsible for the maintenance of the SI second, which is the most accurate standard current...

The wastewater laboratory manual is furnished by the Environmental Protection Agency as an aid to the laboratory analyst for making wastewater analyses. It is not meant to be the ultimate answer for the most precise and accurate tests. However, the proced...

...FOR NONCLINICAL LABORATORY STUDIES Organization...each nonclinical laboratory study, a...well as for the interpretation, analysis, documentation...and reporting of results, and represents...responses of the test system are accurately...the nonclinical laboratory study are...

Interstellar dust particles and their effects on observations of distant objects are investigated by means of laboratory simulations. VUV and visible extinction measurements and Raman spectra are presented for submicron particles of amorphous carbon (produced by arc discharge in an Ar atmosphere and by burning benzene in air) and other carbonaceous ...

Small carbon clusters (Cn, n = 2-15) are produced in a molecular beam by pulsed laser vaporization and studied with vacuum ultraviolet (VUV) photoionization mass spectrometry. The required VUV radiation in the 8-12 eV range is provided by the Advanced Light Source (ALS) at the Lawrence Berkeley National Laboratory. Mass spectra at ...

This work was aimed at 1. Development and construction of a complex SF simulator for simultaneous and accelerated simulation of six SF (unparalleled in the GUS and ESA countries): artificial Sun radiation (200..2500 nm) + VUV radiation (5..200 nm) + proton (p+) and electron (e-) radiation (50..200 keV) + vacuum (10-6 Torr) + thermocycling (4.2..400 K). 2.Development of new ...

The procedures for evaluating the performance of multijunctiion-concentrator cells at the National Renewable Energy Laboratory are described. The accurate measurement of the performance of multijunction cells requires accurate relative-quantum-efficiency-measurements, "matched" reference cells, and a spectrally adjustable solar ...

A method for accurate measurement of complex parts that contain no reference points is described. The technique is applied to the production of accurate castings, to their machining, and to their installation. Accuracies of /approximately/ 2 mil can be ac...

Analytical data from a plutonium-metal exchange program conducted by six ERDA laboratories are statistically evaluated. The objective is an accurate determination of five metal impurities (aluminum, chromium, iron, nickel, silicon) in each of three pluton...

The Krypton Isotope Laser Analysis (KILA) method is being developed at the Pacific Northwest Laboratory (PNL) to measure {sup 85}Kr concentrations in small air samples. The technique uses high-resolution lasers to excite individual isotopes of krypton specifically to induce {sup 85}Kr to fluorescence for detection by optical means. Production of krypton metastables via ...

The Krypton Isotope Laser Analysis (KILA) method is being developed at the Pacific Northwest Laboratory (PNL) to measure [sup 85]Kr concentrations in small air samples. The technique uses high-resolution lasers to excite individual isotopes of krypton specifically to induce [sup 85]Kr to fluorescence for detection by optical means. Production of krypton metastables via ...

The Krypton Isotope Laser Analysis (KILA) method is being developed at the Pacific Northwest Laboratory (PNL) to measure Kr-85 concentrations in small air samples. The technique uses high-resolution lasers to excite individual isotopes of krypton specifically to induce Kr-85 to fluorescence for detection by optical means. Production of krypton metastables via two-photon ...

To interpret the concentrations of the products measured in Titan's atmosphere and to better understand the associated chemistry, many theoretical models have been developed so far. Unfortunately, large discrepancies are still found between theoretical and observational data. A critical examination of the chemical scheme included in these models points out some problems regarding the reliability ...

... of live but impacted animals are essential for triage of entanglements and accurate prognostication of the likelihood ... Ph.D. Veterinary Diagnostic Laboratory E100 Veterinary Teaching Ho...

Mar 29, 2011 ... This image from NASA's Mars Odyssey is of 'swiss cheese' terrain. Sometimes simple terms like these can accurately describe the appearance ...

The research project was conducted in order to determine how accurately the unit of energy (Kilowatthour) is maintained by the electric utility laboratories, and to investigate methods of improving the transfer of the unit of energy. From the preliminary ...

In a laboratory experiment to determine accurately the amount of barium in solution, aqueous sulfuric acid was added to the solution to precipitate barium sulfate, which was then filtered and weighed. In this experiment it is MOST important that ...

The underlying objective of this work is to develop molecular models that accurately describe the polymer-carbon black composite films used in the ENose ...

Sep 14, 2006 ... Education � Video & Features � Fun Stuff & Games ... Those two words accurately sum up the controversy in the astronomical community over ...

Jul 13, 2005... tracks events such as volcano eruptions, floods and ice formation. The most recent software upgrade allows the spacecraft to accurately ...

Mar 18, 2004 ... Improved numerical methods have resulted in more accurate and efficient dynamical cores in models. Improvements have been made in the ...

Jan 5, 2001 ... Precision Orbit Determination (POD) requires the use of accurate models for gravity, tides and geodetic reference frames. POD's sensitivity to ...

Feb 19, 2009 ... Narrator: The space hunt is on--for carbon dioxide. ... scientists to be able to produce more accurate models of the global carbon cycle. ...

Jun 16, 2011 ... Analytical laboratories are able to accurately and precisely ... Keywords: nutrient content, nutrient concentration, nutrient deficiency ...

.S. Carbon Cycle Scientific Steering Group, the International Geosphere-Biosphere Programme, and the Global

The use of simplified error models to accurately simulate and evaluate the performance of an optical

Mar 21, 2007 ... Since the time of the pharaohs in ancient Egypt, the water levels of the Nile were accurately measured. These are now a unique resource for ...

... query the DoD laboratory community or ... Transmission-corrected assays can accurately measure ... Passive neutron assay techniques are applied to ...

The E-Nose was able to determine changes in humidity accurately, but none of the 10 contaminants the E-Nose was trained to monitor was present. ...

... that makes the exercise more accurately reflect how DNA testing works. The author describes a scenario in which ... exercise can be modified to reflect better how DNA testing works. A typical laboratory D...

A procedure is outlined for formulating an accurate neutronics computational model of the ORNL-BSR. Results to data are presented and discussed.

knowledge and belief, the data submitted under subparagraph (b)(1) above were accurate, complete, and current as of the date of agreement on the negotiated ...

Jul 20, 2010 ... These new discoveries will allow us to conduct an accurate census of both the near-Earth and main belt asteroid populations. ...

Jan 22, 2011... the measurement of accurate dynamical masses for stars in binary systems. ... dc.title, Taking the Measure of the Universe : precision ...

Jan 22, 2011 ... dc.description.abstract, Planetary exploration has pointed out the need for accurate electron impact excitation cross sections for ...

Jun 16, 2011 ... Accurate control of the press is obtained through an electrical servo activated press pump and pressure- and position-monitoring transducers. ...

Jan 21, 2004 ... Now, a group of astronomers has obtained a highly accurate distance to one of the stars of the Pleiades known since antiquity as Atlas. ...

... to infer other basic geotechnical properties. ... While a site survey provides an accurate ... Cold Regions Research and Engineering Laboratory (CRREL ...

... versatile adaptive optics testbed to simulate in an accurately scaled fashion all aspects of ABL laser beam propagation, including atmospheric ...

Information requirements for accurate forward modeling of fire emissions on heterogeneous landscapes. Edward J. Hyer, Naval Research Laboratory,, ...

Simultaneous measurement of cloud heights accurate to within 400 meters (about ... multi-angle imaging technique "pioneers the possibility of deploying an ...

Photochemistry is leading the chemical evolution in the Solar System. The VUV photolysis of organic compounds is easy to study in the laboratory, with monochromatic sources, but it is difficult to simulate the whole range of wavelengths corresponding to the most energetic part of the Solar radiation (<190nm). This is why the results obtained in ...

The performance of unique, variable emittance electrochromic ``skins,'' based on Conducting Polymers (CPs) as the active electrochromic material coupled with several different ionic liquids as the electrolyte and unique surface coatings that minimize the solar absorptance ?(s), is described. These have wide operating temperature, operate in space vacuum without any seals, have ?(s) values as low ...

KMS Fusion has assembled a laboratory soft x-ray calibration system, which enables a quick response to the needs of laser-plasma experiments. This calibration source has become flexible and capable, presently allowing calibrations in wavelength and intensity from 67.4 to 2.76 A with K..cap alpha.. and L..cap alpha.. sources. The KMSF system utilizes Manson, Inc. 5 W point ...

The Brookhaven National Laboratory NSLS x-ray and vuv rings currently use capacitively loaded lambda/4 rf accelerating cavities. These cavities are manufactured from copper clad plate steel and require a tuning system with a considerable range. Three separate tuning systems are provided, each having its own specific problems and interactions occur between ...

We propose a collective Thomson scattering experiment at the VUV free electron laser facility at DESY (FLASH) which aims to diagnose warm dense matter at near-solid density. The plasma region of interest marks the transition from an ideal plasma to a correlated and degenerate many-particle system and is of current interest, e.g. in ICF experiments or ...

X rays are a powerful probe of matter because they interact with electrons in atoms, molecules, and solids. They are commonly produced by relativistic electrons or positrons stored in a synchrotron. Recent advances in technology are leading to the development of a new third generation of synchrotron radiation sources that produce vacuum-ultraviolet and x-ray beams of unprecedented brightness. ...

The photodissociation of carbon compounds by solar UV radiation at a heliocentric distance of 1 AU is examined, comparing published observational data with the predictions of theoretical models and results from laboratory experiments. It is shown that species other than CO, including CN, CH, CH(+), C2, and C3, can contribute to the observed brightness of the ...

The commissioning results obtained from the first beamline of the Siam Photon Source are reported. The beamline is a VUV beamline in which light is monochromatized over the energy range between 20-240 eV. The wavelength calibration was carried out by photoemission measurements using the Fermi edge of gold as the standard. The optical beamline and the experimental station have ...

Jefferson Lab (JLab) is proposing JLAMP (JLab Amplifier), a 4th generation light source covering the 10-100 eV range in the fundamental mode with harmonics stretching towards the oxygen k-edge. The new photon science user facility will feature a two-pass superconducting LINAC to accelerate the electron beam to 600MeV at repetition rates of 4.68MHz continuous wave. The average brightness from a ...

We report on the characterization of dibenzo[cde,opq]rubicene (C(30) H(14) ). The molecule was studied in solution at room temperature with absorption spectroscopy in the visible (vis) and ultraviolet (UV) wavelength ranges, and with emission spectroscopy. The infrared (IR), visible, ultraviolet, and vacuum ultraviolet (VUV) absorption spectra of a thin film were measured also ...

Previously, significant laboratory work has been performed on the photochemical deposition and darkening of molecular contaminant films. Much of this work addresses single, purified molecular species to understand fundamental photochemical processes. However, some of this work disagrees with other studies involving mixed, real spacecraft materials. There are also points of ...

The Advanced Light Source (ALS) at the Lawrence Berkeley Laboratory (LBL) is the first of the lower energy (1--2 GeV) third-generation synchrotron radiation facilities to come into operation. Designed with very small electron beam emittances to operate with long insertion devices producing very high brightness beams of synchrotron radiation in the VUV and ...

In the last several years, rapid progress in the development of soft x-ray lasers (SXL) has been observed at a number of laboratories worldwide. Although SXLs are very young'' devices they have already been used for microscopy and holography, and new ideas emerging for broader application of SXLs to microscopy, holography and lithography. This paper ...

This report summarizes the research progress and activity on Joint Services Electronics Program Contract N00014-75-C-0632 for the period 1 April 1978 through 31 March 1979. Specific Projects are: (1) High-T(c) Superconducting Weak-Link Josephson Junctions and Circuits (M.R. Beasley); (2) Acoustic Surface Wave Scanning of Optical Images (G.S. Kino); (3) Fiber Optic Signal Processing (H.J. Shaw); ...

Experimental studies on giant resonances in heavy atoms and ions by electron impact, carried on in our laboratory at Sophia University, are described. Three topics are discussed; the first one is measurements of the double ionization cross sections of singly charged alkaline-earth ions by means of the crossed electron-ion beams experiment. The second topic is measurements of ...

We explore possible upgrades of the existing Jefferson Laboratory IR/UV FEL driver to higher electron beam energy and shorter wavelength through use of multipass recirculation to drive an amplifier FEL. The system would require beam energy at the wiggler of 600 MeV with 1 mA of average current. The system must generate a high brightness beam, configure it appropriately, and ...

Brookhaven National Laboratory has developed a design for an ultra-violet free electron laser facility utilizing a seeded amplifier approach. Since the accelerator is a single pass device, resonator and outcoupler mirrors which are a difficult aspect of oscillator FEL designs are not required. The result is a source of high peak power VUV radiation with ...

Weather Risk Management for the Energy Sector NCAR Research Applications Laboratory The Challenge Accurate assessment of the present and future state of the atmospheric parameters that impact the energy, and demand, which are directly affected by weather. However, these decisions are sometimes reached with inac

Radiation damage in natural zircon minerals due to alpha decay has been simulated in laboratory studies using Pu-doped synthetic zircon. These studies confirm that laboratory testing of actinide-doped materials can accurately predict the radiation-damage ...

The report describes the evaluation of Measurement Assurance Experiments (MAEs) for determining the quality of within-laboratory test data. A general self-evaluative quality system is outlined and objective measures of data quality, precision and/or accur...

... animal husbandry practices for the Argonne National Laboratory (ANL) studies have been described previously (33, 34). Gamma ... estimating days lost per unit dose evolved at ANL (39�41) as an accurate qua...

This project reviewed existing laboratory methods for accurately describing the constitutive behavior of the mixes used in the Commonwealth of Virginia. Indirect tensile (IDT) strength, resilient modulus, static creep in the IDT and uniaxial modes, flexur...

The Fourier Transform Infrared Spectroscopy (FTIR) Laboratory supports the Solar Energy Technologies Program through the measurement and characterization of solar energy-related materials and devices. The FTIR technique is a fast, accurate, and reliable m...

This report summarizes the environmental program activities at the Lawrence Livermore National Laboratory (LLNL) for 1997. This report accurately summarizes the results of environmental monitoring, compliance, impacts assessment, and the restoration progr...

This report summarizes the environmental program activities at the Lawrence Livermore National Laboratory (LLNL) for 1996. This report accurately summarizes the results of environmental monitoring, compliance, impacts assessment, and the restoration progr...

This citation summarizes a one-page announcement of technology available for utilization. The gold content of a plating solution is assayed by a simple method that requires only ordinary electrochemical laboratory equipment and materials. The technique in...

Soil properties must be accurately determined for reliable and economical design of geotechnical structures. Typically, undisturbed soil samples are taken from a prospective foundation and brought to the laboratory where the in situ properties of interest...

The procedure describes the calibration of the Radio Frequency Laboratories, Inc. Model 33 AC-DC- Meter Calibrator. The test instrument is a self contained unit providing accurate av, dv, ac, or dc outputs. (Author)

...CONTINUED) GOOD LABORATORY PRACTICE STANDARDS...well as for the interpretation, analysis, documentation...and reporting of results, and represents...responses of the test system are accurately...documented. (d) Test systems are as specified...applicable good laboratory practice...

...PROGRAMS GOOD LABORATORY PRACTICE STANDARDS...well as for the interpretation, analysis, documentation...and reporting of results, and represents...responses of the test system are accurately...documented. (d) Test systems are as specified...applicable good laboratory practice...

been used to develop instruments for exploring the atmospheres of Venus, Saturn, and Mars (on orbiting organization. Laboratory for Atmospheres Figure 1. Laboratory for Atmospheres Organization Chart Data with a prog- nostic model to produce accurate time series estimates of the complete global atmosphere. The DAO

The photoionization efficiency (PIE) and pulsed field ionization-photoion (PFI-PI) spectra for sulfur atoms S(3P2,1,0) and S(1D2) resulting from the 193.3 nm photodissociation of CS2 have been measured using tunable vacuum ultraviolet (vuv) laser radiation in the frequency range of 82 750-83 570 cm(-1). The PIE spectrum of S(3P2,1,0) near their ionization threshold exhibits ...

In this article, we report an experimental method for studying tunable vacuum ultraviolet (VUV) photochemistry using the H-atom Rydberg tagging technique. In this method, two VUV laser light beams were generated using nonlinear four-wave mixing scheme in a single Kr gas cell: one VUV beam is fixed at the 121.6 nm wavelength to probe ...

Vacuum ultraviolet (VUV) photons in plasma processing systems are known to alter surface chemistry and may damage gate dielectrics and photoresist. We characterize absolute VUV fluxes to surfaces exposed in an inductively coupled argon plasma, 1-50 mTorr, 25-400 W, using a calibrated VUV spectrometer. We also demonstrate an alternative ...

A space- and time-resolving vacuum ultraviolet (VUV) spectrograph system has been applied to diagnose impurity ions behavior in plasmas produced in the tandem mirror GAMMA 10 and the reversed field pinch TPE-RX. We have carried out ray tracing calculations for obtaining the characteristics of the VUV spectrograph and calibration experiments to measure the ...

The Deep Ultraviolet Free Electron Laser (DUVFEL), at the National Synchrotron Light Source in Brookhaven National Laboratory, is an experimental FEL laboratory producing ultrafast short-wavelength radiation for an active user program and exploring critical FEL development issues. Commissioned in the last year, it has demonstrated Self-Amplified ...

The Flare Irradiance Spectral Model (FISM) is an empirical model developed for space weather applications that estimates the solar irradiance at wavelengths from 0.1 to 190 nm at 1 nm resolution with a time cadence of 60 s. This is a high enough temporal resolution to model variations due to solar flares, where few accurate measurements at these wavelengths exist, as well as ...

Fifteen institutions participated in a laboratory intercomparison involving seven natural'matrix samples and six radionuclides. The exercise was organized and coordinated by the Environmental Measurements Laboratory. In some of the samples the radionuclide concentrations were known quite well and in those it was observed that in spite of ...

Inverters are key building blocks of photovoltaic (PV) systems that produce ac power. The balance of systems (BOS) portion of a PV system can account for up to 50% of the system cost, and its reliable operation is essential for a successful PV system. As part of its BOS program, Sandia National Laboratories (SNL) maintains a laboratory wherein ...

FIELD AND LABORATORY COMPARISON OF HATCH RATES IN AEDES ALBOPICTUS (SKUSE) CHRISTOPHER J. VITEK1 that the laboratory treatment accurately mimics field conditions. With Aedes albopictus (Skuse), laboratory in the lab are relevant to field situations. KEY WORDS Hatch stimuli, Aedes albopictus (Skuse), hatch rate

The goal of this contractual effort is the development and demonstration of a Road Transportable Analytical Laboratory (RTAL) system to meet the unique needs of the Department of Energy (DOE) for rapid, accurate analysis of a wide variety of hazardous and radioactive contaminants in soil, groundwater, and surface waters. This ...

The Vacuum Ultraviolet (VUV) emissivity of a cascade arc in argon from 125 to 200 nm was investigated. In particular, the temperature and pressure dependence of the emmissivity was studied. Further enhancement of the emissivity was obtained by adding nitr...

Pulsed field ionization (PFI) has been used in conjunction with coherent VUV radiation to investigate the rotational state distributions of molecular cations following single photon ionization. The rotational state distributions for several linear cations...

High rejection filters are difficult enough to achieve in the UV-VIS-IR with known materials and constants. Even more difficult is the design and manufacture of rejection filters in the EUV and VUV given the uncertainty of optical constants and their wide...

The design of VUV beamlines for the Advanced Light Source is discussed. Features of the design serve to illustrate the careful attention required in order to preserve the performance of the low emittance third generation'' storage ring, operating with insertion devices. 11 refs.

The design of VUV beamlines for the Advanced Light Source is discussed. Features of the design serve to illustrate the careful attention required in order to preserve the performance of the low emittance ``third generation`` storage ring, operating with insertion devices. 11 refs.

A device and method for synchronous generation and amplification of tunable vuv laser radiation is presented. The system makes use of flat plate conductors which contain first and second parallel spaced channels therein.

Investigated are the electrical characteristics and the vacuum ultraviolet (VUV) radiation produced by a sliding discharge in an atmosphere of argon. The discharge covered the surface of an aluminum rod wrapped with a graded layer of Kapton film from 0.05...

Hydrogen peroxide evolution during the vacuum-ultraviolet (V-UV, 172 nm) photolysis of water is considerably affected by the presence of oxalic acid (employed as a model water pollutant) and striking differences are observed in the absence and in the presence of dioxygen. PMID:15875072

Frequency tunable VUV radiation has been generated using excimer lasers and very narrow bandwidth dye lasers by twophoton resonant difference frequency mixing in xenon. Conversion efficiencies of >0.1 percent have been achieved.

YouTube: AdvancedLightSource Home Research Areas Geoscience/Environment Experimental Test of Self-Shielding in VUV Photodissociation of CO Print One way to test models of the...

ALSBerkeleyLab YouTube: AdvancedLightSource Home Research Areas Chemistry Experimental Test of Self-Shielding in VUV Photodissociation of CO Print One way to test models of the...

An experimental study is described whose objectives is to assess the role of NO in the nonequilibrium vacuum ultraviolet (VUV) radiation from shockheated air. The experiment utilizes a splitter-plate shock tube technique wherein the VUV radiation behind a...

The VUV spectra of solids are often dominated by atomic or molecular effects, which clearly manifest themselves in the gross features of the spectra and the fine structure at inner shell excitation thresholds. Evidence for the influence of atomic and mole...

Fritz, David Reis, Michigan University Ann Arbor, Michigan #12;The VUV-FEL Tunnel TEO e- FEL- experimental to: Photon diagnostic: Stefan Duesterer, Harald Redlin, Josef Feldhaus Accelerator group: Holger

... Abstract : Radiative augmented combustion is based on the fact that radiation of selected ... ultraviolet (VUV) and ultraviolet (UV) light sources. ...

... Title : Radiation Augmented Combustion ... Pulsed VUV (vacuum ultraviolet) light sources and continuous UV (ultraviolet) light sources are being used ...

This report contains information on the following topics: A Word on the Writing of Beamline Descriptions; Beamline Equipment Utilization for General Users; the Vacuum Ultraviolet (VUV) Storage Ring and Beamlines; VUV Beamline Descriptions--An Explanation; VUV Beamline Descriptions; X-Ray Storage Ring and Beamlines; X-Ray Beamline ...

Marshall Space Flight Center's (MSFC) is developing a Vacuum Ultraviolet (VUV) Fabry Perot that will