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Luminescence process, refractory stabilities, and new novel electronic states: scanning chemical reactions and novel products for laser induced isotope separation. Progress report, December 1, 1975--July 15, 1976

Description: The formulation, development, and use of versatile oven systems for high temperature metal vaporization at temperatures in excess of 2000/sup 0/C are discussed. Refinements of an apparatus appropriate for the production and study of small metal aggregates M/sub n/(2 less than or equal to n less than or equal to 6) are discussed at length. Improvements in the argon ion and nitrogen pumped dye laser systems, and necessary additions for effective interfacing of these dye lasers to the aggregates a… more
Date: August 1, 1976
Creator: Gole, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Production of heavy water by photodesorption

Description: Research has recently brought attention to the laser as a tool for isotope enrichment. So far the main thrust of this effort has been toward uranium enrichment; however, numerous successes in other areas have been demonstrated. Isotopes of boron, sulfur, chlorine, and carbon have been separated. A new technique is proposed for laser isotope enrichment. The technique, referred to as photodesorption, involves selective isotopic excitation of molecules adsorbed on a surface such that an enrichment… more
Date: January 1, 1976
Creator: Gangwer, T. & Goldstein, M. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Dissociation of NH/sub 3/ and NH/sub 2/D by high power CO/sub 2/ laser radiation

Description: Multiquantum dissociation of polyatomics using intense CO/sub 2/ lasers resulting in isotopic enrichment has been demonstrated for several molecules. In this presentation, the possibility of selective dissociation of NH/sub 3/ and NH/sub 2/D by high power laser radiation at 10 ..mu..m will be considered. Relevant work performed at the Lawrence Livermore Laboratory and elsewhere will be summarized. In this review, attention will be given to four distinct mechanisms that can play varying degrees … more
Date: August 1, 1976
Creator: Jacobs, R. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Lasers for isotope separation

Description: The Los Alamos Scientific Laboratory is conducting research on uranium enrichment. All processes being studied employ uranium molecules and use lasers to provide isotopic selectivity and enrichment. There are four well-defined infrared frequencies and two ultraviolet frequency bands of interest. The infrared frequencies are outside the range of the available lasers and an extensive research and development activity is currently underway. Lasers are available in the uv bands, however, much devel… more
Date: January 1, 1976
Creator: O'Hair, E. A. & Piltch, M. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Rare gas monohalide discharge studies. Final report

Description: Results of the first phase of an experimental investigation of the minimum e-beam current density requirements for repetitively pulsed XeF lasers with 10 to 100-mJ pulse energy are presented. Measurements were made in the self-sustained and e-beam preionized mode of operation. The e-beam preionized experimental results were similar to those obtained with uv preionization at other laboratories, indicating that ionization phenomena (rather than photodissociation) are dominant in both experiments.… more
Date: December 1, 1976
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lasers for isotope separation. Progress report, January 1, 1976--September 30, 1976

Description: The proposed research associated with this contract is divided roughly into three parts: first, the study of Raman spin-flip devices and associated semiconductor physics; second, the free-electron laser; and finally, work related to specific isotope-separation processes. The hot-electron properties of InSb irradiated by 10.6 ..mu..M CO/sub 2/ laser radiation and the anomalous transmission of the InSb device have been analyzed. In related work hot-electron effects were studied both in Ge and in … more
Date: September 1976
Creator: Scully, Marian O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tritium Waste Control Project progress report: April--June 1976. [LIS; electrolysis; monitor; shipping container; catalytic exchange]

Description: Tritiated Liquid Waste Decontamination (Molecular Excitation): A preliminary economic study of water detritiation by laser isotope separation indicates possible advantages over the catalytic exchange process. The electric power requirements are a factor of 5 lower, resulting in a 50-percent reduction in operating costs. Capital costs for the two methods appear comparable. Additional attempts were made to determine the ir spectrum of HTO around the ..nu../sub 1/ band. However, carbon dioxide imp… more
Date: December 10, 1976
Creator: Bixel, J. C. & Kershner, C. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Multicomponent isotopic separation and recirculation analysis. [MISRA]

Description: A digital computer program for design of multicomponent distillation columns has been developed based on an exact method of solution of the governing equations. Although this computer program was developed for enrichment of the spent fuels from presently conceived tokamak-type fusion power reactors by cryogenic distillation, the program can be used for the design of any multicomponent distillation column, provided, of course, the necessary thermodynamic and phase equilibrium data are available.… more
Date: January 1, 1976
Creator: Misra, B. & Maroni, V. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lasers for isotope separation processes and their properties

Description: The laser system requirements for isotope enrichment are presented in the context of an atomic uranium vapor process. Coherently pumped dye lasers using as the pump laser either the frequency doubled Nd:YAG or copper vapor are seen to be quite promising for meeting the near term requirements of a laser isotope separation (LIS) process. The utility of electrical discharge excitation of the rare gas halogens in an LIS context is discussed.
Date: August 1, 1976
Creator: George, E. V. & Krupke, W. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Luminescence process, refractory stabilities, and new and novel electronic states: scanning chemical reactions and novel products for laser induced isotope separation. Progress report, December 1, 1975--November 20, 1976

Description: Oven systems for high temperature metal vaporization at temperatures in excess of 2000/sup 0/C are being developed. Modifications of an apparatus appropriate to the production and study of small metal aggregates M/sub n/ (2 less than or equal to n less than or equal to 6) are discussed, including the construction and operation of argon ion and nitrogen pumped dye laser systems. The dye laser system is being used to induce fluorescence from small metal aggregates. Components necessary for interf… more
Date: November 1, 1976
Creator: Gole, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Isotope separations section progress report for quarter ending December 31, 1975

Description: Isotopic separations of Hg, Tl, Sn, and Yb were continued throughout the quarter, using the twenty-four 180/sup 0/ electromagnetic separators. Results of the separations are reported. A study of the characteristics of the 255/sup 0/ separators has been made using SnS, SnCl/sub 4/, PbCl/sub 2/, CCl/sub 4/, and BCl/sub 3/ as charge materials. Developmental efforts are continuing to enhance the capability of the 180/sup 0/ sector isotope separator to prepare highly enriched isotopic targets direct… more
Date: April 1, 1976
Creator: Newman, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Isotope separations section progress report for quarter ending March 31, 1976

Description: The activities of the Isotope Separations Section of the Chemical Technology Division are described for the quarter ending March 31, 1976. Included is the status of the current electromagnetic separation of the isotopes of chlorine, tin, and ytterbium. The research and development activities on the 255/sup 0/ separators to improve the isotopic purity of germanium isotopes are also discussed. An improved chemical recovery-recycle system for ytterbium charge material and a study of the factors in… more
Date: June 1, 1976
Creator: Newman, E. (comp.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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One-dimensional model for coaxial flowing streams with condensation. [Developed for application to laser isotope separation]

Description: An analytical model was developed to identify the basic phenomena present in the high temperature flow (2700/sup 0/K) of two gaseous coaxial streams. The one-dimensional model potentially has application for design of hardware and test conditions for conducting a laser isotope separation feasibility experiment. The processes of interest are those of coupled flow dynamics, liquid condensation of metal vapors, and gaseous diffusion. The stream tubes may initially consist of pure or combinations o… more
Date: March 1, 1976
Creator: Andes, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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D. C. electric field behavior of high lying states in atomic uranium

Description: The effects of D. C. electric fields on high lying Rydberg and valence states in atomic uranium have been studied. Results of measurements of Stark shifts, lifetime lengthening via l-mixing, critical fields for ionization, barrier tunneling, and the appearance of zero-field parity forbidden transitions are presented for atomic uranium along with the observation of field induced autoionization of valence states. 3 figs. (GHT)
Date: March 31, 1976
Creator: Paisner, J. A.; Carlson, L. R.; Worden, E. F.; Johnson, S. A.; May, C. A. & Solarz, R. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Study of the prospects for heavy water production via laser isotope separation. Quarterly progress report, April 1, 1976--June 30, 1976

Description: General considerations relevant to heavy water production via laser-induced vibrational catalysis are discussed. The problems and prospects inherent in utilizing the accelerating effect of reagent vibrational energy on chemical reaction rates are discussed for two reaction classes: isotopic exchange reactions and hydrogen halide additions to unsaturated hydrocarbons. Finally, the process of multiple photon molecular dissociation is considered with reference to two specific molecules: monodeuter… more
Date: August 1, 1976
Creator: Miller, M. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mound Laboratory activities for the Division of Physical Research: July--December 1975

Description: Research and development are reported in the following areas: isotope separation and production for Ar, C, He, Kr, Ne, O, S, and Xe; testing of cubic B crystals for superconductivity; metal hydride research on band theory and electronic structure and spin-lattice relaxation times for VH/sub x/; separation chemistry of Pu, /sup 231/Pa, /sup 230/Th, /sup 229/Th, and /sup 234/U; adsorption of U and Pu by bone char; separation research for Ca and S isotopes; molecular beam scattering for Ar--Kr; an… more
Date: May 14, 1976
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of multicomponent flows in the aerodynamic separation of uranium isotopes

Description: Equations governing gas flow containing uranium hexafluoride and an inert carrier have been developed for mixtures typical of those used in aerodynamic isotope separation. In this report these equations are solved for a simple separation device (two-dimensional channel with external force). The numerical solutions are compared with the results obtained from direct simulation.
Date: March 1, 1976
Creator: Eaton, R. R. & Fox, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Laser isotope separation by selective excited state photochemistry. Progress report, June 1, 1975--February 29, 1976

Description: Progress has been made on the development of a low-temperature source for the generation of uranium atoms, and the use of laser-induced predissociation in Rb/sub 2/* for isotope separation. However, our main efforts have concentrated on understanding and improving the laser isotope separation of /sup 35/Cl and /sup 37/Cl by photochemical means. The gas-phase reaction ICl* with 1,2-dibromoethylene produces both cis-1-bromo-2-chloroethylene and cis-1,2-dichloroethylene stereospecifically. Selecti… more
Date: February 1, 1976
Creator: Zare, R. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Laser chemistry and the nuclear fuel cycle

Description: The application of lasers to isotope enrichment and to the study and process of photochemical improvements to the fuel recycle process is discussed. Laser power and laser specifications for these areas are indicated. (JSR)
Date: January 1, 1976
Creator: Jensen, R. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Prospective systems for laser separation of deuterium

Description: Bimolecular 4- and 6-center addition reactions into unsaturated hydrocarbons may be optically accelerated with 3 to 6 quanta provided by CO laser excitation of DBr or DCl or by DF laser excitation of HDO or DF. Unimolecular decomposition of HDCO occurs with high selectivity by a single uv photon. Multi-quantum CO/sub 2/ laser excitation can lead to 4-center molecular elimination from deuterated organic alcohols and acids.
Date: November 19, 1976
Creator: Marling, J. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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