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Preparation of Charge Materials for Ornl Electromagnetic Isotope Separators

Description: SEPARATORS. C. W. Sheridan, H. R. Gwinn, and L. O. Descriptions are given of procedures, techniques, and equipment used to prepare charge materials for electromagnetic isotope separators at ORNL. Data on ion outputs during processing, charge consumption rates, and process efficiencies are given for 54 elements. (auth)
Date: August 1, 1962
Creator: Sheridan, C W; Gwinn, H R & Love, L O
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Gas chromatographic studies of the relative retention of the sulfur isotopes in carbonyl sulfide, carbon disulfide, and sulfur dioxide

Description: A precision gas chromatograph, coupled to a quadrupole mass spectrometer and an on-line computer, was used to study the fractionation on Porasil A of the /sup 32/S//sup 34/S isotopic pair in a variety of sulfur-containing molecules. Carbonyl sulfide (COS) yielded an average ..cap alpha.. value of 1.00074 +- 0.00017 (standard deviation) for the temperature range 25/sup 0/C to 75/sup 0/C. The carbon disulfide (CS/sub 2/) value was 1.00069 +- 0.00023 for the range 53/sup 0/C to 103/sup 0/C, and th… more
Date: January 18, 1980
Creator: Fetzer, J.C. & Rogers, L.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Helium-jet coupled mass separator: advances and directions. [UNISOR; for nuclei far from beta stability]

Description: Results from the RAMA-88 system at the Lawrence Berkeley Laboratory are being used to design a new helium-jet and ion source system for the UNISOR project. This system should complement the existing integrated target-ion source to extend UNISOR's capabilities to include a majority of the chemical elements. This fast transport helium-jet system should permit studies of nuclides with half-lives down to 50 ms.
Date: January 1, 1980
Creator: Moltz, D.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Arsenic Removal From Gaseous Streams

Description: Uranium feed materials, depending on the production process, have been found to contain arsenic (As) as a contaminant. Analyses show the As to be present as As pentafluoride (AsF{sub 5}) and/or hexafluoroarsenic acid (HAsF{sub 6}) and enter the enrichment cycle through contaminated hydrogen fluoride (HF). Problems related to corrosion of cylinder valves and plugging of feed lines and valves have been attributed to the As. Techniques to separate AsF{sub 5} from uranium hexafluoride (UF{sub 6}) u… more
Date: November 22, 1989
Creator: Russell, R. G. & Otey, M. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Basic studies of a gas-jet-coupled ion source for on-line isotope separation

Description: A hollow-cathode ion source was used in a gas-jet-coupled configuration to produce ion beams of fission products transported to it from a /sup 252/Cf fission source. Solid aerosols of NaCl and Ag were used effectively as activity carriers in the gas-jet system. Flat-plate skimmers provided an effective coupling of the ion source to the gas jet. Ge(Li) spectrometric measurements of the activity deposited on an ion-beam collector relative to that deposited on a pre-skimmer collector were used to … more
Date: January 1, 1980
Creator: Anderl, R. A.; Novick, V. J. & Greenwood, R. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fundamental studies of separation processes

Description: Studies completed during the past year were: pressure and temperature effects on retention behavior of ion pairs, fractionation studies of sulfur isotopes in carbon disulfide, anomolous peak shapes obtained in gas chromatography using liquid crystal stationary phases in an electrostatic field, and the application of a new steric-exclusion packing for molecular-weight fractionation of petroleum crudes. Studies are continuing on the effects of the dead volume of a detector on the peak shape as a … more
Date: September 1, 1977
Creator: Rogers, L. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mound Facility activities in chemical and physical research: July-December 1979

Description: Research is reported in the following fields: isotope separation (Ar, C, He, Kr, Ne, O, Xe), low-temperature research (H intermolecular potential functions, gas analysis in trennschaukel), separation chemistry (/sup 229/Th, /sup 231/Pa, /sup 230/Th, /sup 234/U), separation research (liquid thermal diffusion, Ca isotope separation, molecular beam scattering, mutual diffusion of noble gas mixtures, lithium chemical exchange with cryptands), and calculations in plutonium chemistry (algorithms, val… more
Date: June 18, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Environmental site description for a Uranium Atomic Vapor Laser Isotope Separation (U-AVLIS) production plant at the Portsmouth Gaseous Diffusion Plant site

Description: Uranium enrichment in the United States has utilized a diffusion process to preferentially enrich the U-235 isotope in the uranium product. In the 1970s, the US Department of Energy (DOE) began investigating more efficient and cost-effective enrichment technologies. In January 1990, the Secretary of Energy approved a plan for the demonstration and deployment of the Uranium Atomic Vapor Laser isotope Separation (U-AVLIS) technology with the near-term goal to provide the necessary information to … more
Date: September 1, 1991
Creator: Marmer, G. J.; Dunn, C. P.; Filley, T. H.; Moeller, K. L.; Pfingston, J. M.; Policastro, A. J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Operation of the TSTA (Tritium Systems Test Assembly) with 100 gram tritium

Description: In March of 1988 full operation of the 4-column isotope separation system (ISS) was realized in runs that approximated the design load of tritium. Previous operations had been fraught with operating difficulties principally due to external systems. This report will examine the recent highly successful 6-day period of operation. During this time the system was cooled from room temperature, loaded with hydrogen isotopes including 109 grams of tritium, integrated with the transfer pumping, impurit… more
Date: 1988~
Creator: Sherman, R.H. & Bartlit, J.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thyratron characteristics under high di/dt and high-repetition-rate operation

Description: Power conditioning systems for high peak and average power, high repetition rate discharge excited lasers involve operation of modulator components in unconventional regimes. Reliable operation of switches and energy storage elements under high voltage and high di/dt conditions is a pacing item for laser development at the present time. To test and evaluate these components a Modulator Component Test Facility (MCTF) was constructed. The MCTF consists of a command charge system, energy storage c… more
Date: May 11, 1981
Creator: Ball, D.; Hill, J. & Kan, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Unit Operations Section Monthly Progress Report, November 1961

Description: Openation of a 6-in.-dia foam separation column with Sr/sup 89/ tracer and dodecylbenzenesulfonate as a surfactant and foaming agent was continued. The catalytic oxidation of H/sub 2/, CO, and CH/sub 4/ was studied using a nickel- chromepalladium ribbon catalyst. A Mark I prototype fuel assembly was sheared to within 1.5-in. of the end by modifying the gas hydraulic system of the shear. The force required to shear a highly carburized Mark I fuel assembly ductile tubing. Demonstration of the mec… more
Date: May 16, 1962
Creator: Whatley, M. E.; Haas, P. A.; Horton, R. W.; Ryon, A. D.; Suddath, J. C. & Watson, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Single column and two-column H-D-T distillation experiments at TSTA

Description: Cryogenic distillation experiments were peformed at TSTA with H-D-T system by using a single column and a two-column cascade. In the single column experiment, fundamental engineering data such as the liquid holdup and the HETP were measured under a variety of operational condtions. The liquid holdup in the packed section was about 10 )approximately) 15% of its superficial volume. The HETP values were from 4 to 6 cm, and increased slightly with the vapor velocity. The reflux ratio had no effect … more
Date: January 1, 1988
Creator: Yamanishi, T.; Yoshida, H.; Hirata, S.; Naito, T.; Naruse, Y.; Sherman, R.H. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Future directions and emerging techniques for ISOL systems

Description: The current status and future promise of ISOL systems are discussed, with emphasis on newly conceived experimental capabilities and interests. In addition to studies of nuclear structure using traditional or new on-line approaches, such as on-line nuclear orientation, the possibilities for studies with accelerated radioactive beams that have direct application to basic problems in materials science and astrophysics as well as to nuclear theory are pointed out. 43 refs., 3 figs., 1 tab.
Date: January 1, 1986
Creator: Talbert Jr., W. L. & Bunker, M. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High-resolution spectroscopy using tunable diode lasers: techniques and applications

Description: Methods for generating tunable monochromatic infrared radiation are tabulated. Techniques used in tunable semiconductor diode laser spectroscopy are discussed. Spectra of SF/sub 6/ and OsO/sub 4/ are discussed, including references to photodissociation and laser isotope separation. 4 figures, 3 tables, 80 references. (DLC)
Date: January 1, 1977
Creator: McDowell, R.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Cascades for hydrogen isotope separation using metal hydrides

Description: Designs are presented for continuous countercurrent hydrogen isotope separation cascades based on the use of metal hydrides. The cascades are made up of pressure swing adsorption (PSA) or temperature swing adsorption (TSA) stages. The designs were evolved from consideration of previously conducted studies of the separation performance of four types of PSA and TSA processes.
Date: January 1, 1982
Creator: Hill, F.B. & Grzetic, V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Sulfur-isotope separation by distillation

Description: Sulfur-isotope separation by low-temperature distillation of hydrogen sulfide was studied in an 8-m, 25-mm diameter distillation column. Column temperature was controlled by a propane-propylene heat pipe. Column packing HETP was measured using nitric oxide in the column. The column was operated at pressures from 45 to 125 kPa. The relative volatility of S-32 vs. S-34 varied from 1.0008 to 1.0014.
Date: January 1, 1982
Creator: Mills, T.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Enhanced use of clips at the Los Alamos National Laboratory

Description: Early efforts in producing Expert Systems for engineering applications used a limited subset of CLIPS features. We discuss implementation details of previous Expert Systems and the current Expert System used for training operators in the control of the Isotope Separation System. 4 refs., 8 figs.
Date: January 1, 1991
Creator: Duerre, K. H.; Parkinson, W. J. & Osowski, J. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Capability of the electromagnetic isotope-enrichment facility at ORNL

Description: The isotope separation program at Oak Ridge National Laboratory (ORNL) prepares and distributes electromagnetically enriched stable isotopes to the worldwide scientific community. Among the topics discussed in the present paper are the methods of enriching isotopes, the limitations that apply to the quantity and final assay of the separation products, and a generalized production flowsheet indicating the capability of the facility. A brief description of each of the production steps, from the s… more
Date: January 1, 1982
Creator: Newman, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Practical enrichment technique for /sup 33/S (/sup 34/S)

Description: The successful preparation of a macroscopic sample of enriched /sup 33/S by laser-induced molecular dissociation is reported. Approach was to induce isotopically selective dissociation of SF/sub 6/ with CO/sub 2/-laser pulses and to separate the remaining SF/sup 6/ from the sulfur-containing reaction products by cryogenic distillation. A 200 Hz, 0.75 J/pulse laser was used for photolysis of low-pressure (less than 1 torr) gas mixtures. The mixture of SF/sub 6/ and scavenger recirculated continu… more
Date: January 1, 1982
Creator: McInteer, B.B.; Lyman, J.L.; Nilsson, A.C. & Quigley, G.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Application of atomic vapor laser isotope separation to the enrichment of mercury

Description: Workers at GTE/Sylvania have shown that the efficiency of fluorescent lighting may be markedly improved using mercury that has been enriched in the /sup 196/Hg isotope. A 5% improvement in the efficiency of fluorescent lighting in the United States could provide a savings of approx. 1 billion dollars in the corresponding reduction of electrical power consumption. We will discuss the results of recent work done at our laboratory to develop a process for enriching mercury. The discussion will cen… more
Date: September 1, 1986
Creator: Crane, J. K.; Erbert, G. V.; Paisner, J. A.; Chen, H. L.; Chiba, Z.; Beeler, R.G. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Summary of national and international radioactive waste management programs (excluding United States)

Description: This report is divided into two parts. Various national fuel cycle and waste management programs are summarized in tabular form in the first part. The second part of the report gives a nation-by-nation overview of fuel cycle and waste management technologies. Brief summaries on the activities of several international organizations are included. (LK)
Date: March 1, 1978
Creator: Harmon, K.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Real time analysis under EDS

Description: This paper describes the analysis component of the Enrichment Diagnostic System (EDS) developed for the Atomic Vapor Laser Isotope Separation Program (AVLIS) at Lawrence Livermore National Laboratory (LLNL). Four different types of analysis are performed on data acquired through EDS: (1) absorption spectroscopy on laser-generated spectral lines, (2) mass spectrometer analysis, (3) general purpose waveform analysis, and (4) separation performance calculations. The information produced from this … more
Date: July 1, 1985
Creator: Schneberk, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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