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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
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.
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.
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.
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
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.
Partner: UNT Libraries Government Documents Department
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Stage separation theory

Description: The theory and a mathematical treatment of various stage-type isotope separation methods are presented. (TFD)
Date: May 1, 1978
Creator: Von Halle, E.
Partner: UNT Libraries Government Documents Department
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Laser Program annual report, 1976

Description: Separate abstracts were prepared for each of the 8 included sections. (MOW)
Date: June 1, 1977
Creator: Coyle, P.E. (ed.)
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.
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.
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.
Partner: UNT Libraries Government Documents Department
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MOUND LABORATORY MONTHLY PROGRESS REPORT FOR MAY 1961 ON PLASTICS, RADIOELEMENTS, ISOTOPE SEPARATION, AND REACTOR FUELS

Description: tems were cast and cured. Results of chemical tests on aa epoxy curlang exudate are included. Comparison of solvent effects on retention of radioelements by stainless steel was started and data are tabulated for Ac/sup 227/, Th/sup 227/, a nd Ra/sup 22//sub 3/. Work on protactinium was resumed after suspension of this project in 1960. Methods for preparation of small quantities of highly enriched U isotopes are being examined. Included in the survey are chemical exchange, electromagnetic separa… more
Date: May 30, 1961
Creator: Eichelberger, J.F.
Partner: UNT Libraries Government Documents Department
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Lasers in chemical processing

Description: The high cost of laser energy is the crucial issue in any potential laser-processing application. It is expensive relative to other forms of energy and to most bulk chemicals. We show those factors that have previously frustrated attempts to find commercially viable laser-induced processes for the production of materials. Having identified the general criteria to be satisfied by an economically successful laser process and shown how these imply the laser-system requirements, we present a status… more
Date: April 15, 1982
Creator: Davis, J.I.
Partner: UNT Libraries Government Documents Department
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Physics Division progress report for period ending June 30, 1981

Description: Progress is reported in detail in the following areas: Holifield Heavy-Ion Research Facility, nuclear physics, the UNISOR program, neutron physics, theoretical physics, the Nuclear Data Project, atomic and plasma physics, and high energy physics. Publications are listed. Separate abstracts were prepared for 34 papers. (WHK)
Date: November 1, 1981
Partner: UNT Libraries Government Documents Department
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Uranium enrichment export control guide: Gaseous diffusion

Description: This document was prepared to serve as a guide for export control officials in their interpretation, understanding, and implementation of export laws that relate to the Zangger International Trigger List for gaseous diffusion uranium enrichment process components, equipment, and materials. Particular emphasis is focused on items that are especially designed or prepared since export controls are required for these by States that are party to the International Nuclear Nonproliferation Treaty.
Date: September 1, 1989
Partner: UNT Libraries Government Documents Department
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Fission energy program of the US Department of Energy, FY 1981

Description: Information is presented concerning the National Energy Plan and fission energy policy; fission energy program management; converter reactor systems; breeder reactor systems; and special nuclear evaluations and systems.
Date: March 1, 1980
Partner: UNT Libraries Government Documents Department
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Experimental and computer modeling studies of isotopically selective two-step laser photodissociation of small molecules

Description: The approach to laser isotope separation taken in this study is based on isotopically selective, two-step, laser photodissociation of small molecules. A primary goal of this study is the measurement of fundamental molecular processes which control the two-step, photodissociative isotope enrichment process. This objective has led to experimental measurements of uv photodissociation cross sections for vibrationally excited states of several small molecules, including the first cross section repor… more
Date: March 25, 1992
Creator: Zittel, P.F.
Partner: UNT Libraries Government Documents Department
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Laser program. Annual report, 1978

Description: This volume documents progress in advanced quantum electronics - primarily the quest for advanced rep-rateable short-wavelength lasers with high efficiency. Application studies in electrical energy production and fissile fuel production are also described. Selected highlights of the advanced isotope separation program are also presented. (MOW)
Date: March 1, 1979
Creator: Monsler, M.J. & Jarman, B.D. (eds.)
Partner: UNT Libraries Government Documents Department
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Theoretical Division progress report. [October 1976-January 1979]

Description: This report presents highlights of activities in the Theoretical (T) Division from October 1976-January 1979. The report is divided into three parts. Part I presents an overview of the Division: its unique function at the Los Alamos Scientific Laboratory (LASL) and within the scientific community as a whole; the organization of personnel; the main areas of research; and a survey of recent T-Division initiatives. This overview is followed by a survey of the 13 groups within the Division, their m… more
Date: April 1, 1979
Creator: Cooper, N.G. (comp.)
Partner: UNT Libraries Government Documents Department
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Long-term proliferation and safeguards issues in future technologies

Description: The purpose of the task was to assess the effect of potential new technologies, nuclear and non-nuclear, on safeguards needs and non-proliferation policies, and to explore possible solutions to some of the problems envisaged. Eight subdivisions were considered: New Enrichment Technologies; Non-Aqueous Reprocessing Technologies; Fusion; Accelerator-Driven Reactor Systems; New Reactor Types; Heavy Water and Deuterium; Long-Term Storage of Spent Fuel; and Other Future Technologies (Non-Nuclear). F… more
Date: February 1, 1986
Creator: Keisch, B.; Auerbach, C.; Fainberg, A.; Fiarman, S.; Fishbone, L.G.; Higinbotham, W.A. et al.
Partner: UNT Libraries Government Documents Department
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Science, technology, and the industrialization of laser-driven processes

Description: Members of the laser program at Lawrence Livermore National Laboratory (LLNL) reviewed potential applications of lasers in industry, some of which are: isotope separation; cleanup of radioactive waste; trace impurity removal; selective chemical reactions; photochemical activation or dissociation of gases; control of combustion particulates; crystal and powder chemistry; and laser induced biochemistry. Many of these areas are currently under active study in the community. The investigation at LL… more
Date: May 1, 1985
Creator: Davis, J.I. & Paisner, J.A.
Partner: UNT Libraries Government Documents Department
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Charging-circuit study for copper-vapor lasers. Final report, 29 June 1981-30 November 1981

Description: This study is divided into three tasks whose combined purpose is to evaluate methods of charging high PRF pulsed power subsystems required in a proposed laser isotope separation (LIS) plant. The work performed in this program follows directly from designs and experiments carried out in a recently-completed study and, in fact, utilizes much of the same apparatus described previously. The first task required the preparation and vugraph presentation of a review of eight potential charging methods.… more
Date: December 1, 1981
Partner: UNT Libraries Government Documents Department
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Criticality reference benchmark calculations for burnup credit using spent fuel isotopics

Description: To date, criticality analyses performed in support of the certification of spent fuel casks in the United States do not take credit for the reactivity reduction that results from burnup. By taking credit for the fuel burnup, commonly referred to as burnup credit,'' the fuel loading capacity of these casks can be increased. One of the difficulties in implementing burnup credit in criticality analyses is that there have been no critical experiments performed with spent fuel which can be used for … more
Date: April 1, 1991
Creator: Bowman, S.M.
Partner: UNT Libraries Government Documents Department
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