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Photochemical Isotope Separation
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Book Synopsis Photochemical Isotope Separation by :
Download or read book Photochemical Isotope Separation written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A process for separating isotopes by selective excitation of isotopic species of a volatile compound by tuned laser light. A highly cooled gas of the volatile compound is produced in which the isotopic shift is sharpened and defined. Before substantial condensation occurs, the cooled gas is irradiated with laser light precisely tuned to a desired wavelength to selectively excite a particular isotopic species in the cooled gas. The laser light may impart sufficient energy to the excited species to cause it to undergo photochemical reaction or even to photoionize. Alternatively, a two-photon irradiation may be applied to the cooled gas to induce photochemical reaction or photoionization. The process is particularly applicable to the separation of isotopes of uranium and plutonium.
Book Synopsis Introduction to Laser Isotope Separation by : Los Alamos Scientific Laboratory. Applied Photochemistry Division
Download or read book Introduction to Laser Isotope Separation written by Los Alamos Scientific Laboratory. Applied Photochemistry Division and published by . This book was released on 1978 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis INVESTIGATION OF THE PHOTOCHEMICAL METHOD FOR URANIUM ISOTOPE SEPARATION. by :
Download or read book INVESTIGATION OF THE PHOTOCHEMICAL METHOD FOR URANIUM ISOTOPE SEPARATION. written by and published by . This book was released on 1943 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To find a process for successful photochemical separation of isotopes several conditions have to be fulfilled. First, the different isotopes have to show some differences in the spectrum. Secondly, and equally important, this difference must be capable of being exploited in a photochemical process. Parts A and B outline the physical and chemical conditions, and the extent to which one might expect to find them fulfilled. Part C deals with the applicability of the process.
Book Synopsis Laser Isotope Separation in Atomic Vapor by : Petr Artemovich Bokhan
Download or read book Laser Isotope Separation in Atomic Vapor written by Petr Artemovich Bokhan and published by John Wiley & Sons. This book was released on 2006-12-13 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by leading Russian scientists, including Nobel laureate, A.M. Prokhorov (1916-2002), this first book on this important technology allows an understanding of the physics of atomic vapor laser isotope separation and new photochemical methods of laser isotope separation. One entire chapter is devoted to chemical reactions of atoms in excited states, while further chapters deal with the separation of isotopes by one photon isotope-selective and coherent isotope-selective two photon excitation of atoms. A final chapter looks at the prospects for the industrial production of isotope products by laser isotope separation. The whole is rounded off by six appendices.
Book Synopsis Photochemical Separation of Mercury Isotopes by : R. E. Ewing
Download or read book Photochemical Separation of Mercury Isotopes written by R. E. Ewing and published by . This book was released on 1959 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Photochemistry and Isotope Separation in Formaldehyde by : John Hamilton Clark
Download or read book Laser Photochemistry and Isotope Separation in Formaldehyde written by John Hamilton Clark and published by . This book was released on 1976 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Automated Product Recovery in a HG-196 Photochemical Isotope Separation Process by :
Download or read book Automated Product Recovery in a HG-196 Photochemical Isotope Separation Process written by and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A method of removing deposited product from a photochemical reactor used in the enrichment of .sup. 196 Hg has been developed and shown to be effective for rapid re-cycling of the reactor system. Unlike previous methods relatively low temperatures are used in a gas and vapor phase process of removal. Importantly, the recovery process is understood in a quantitative manner so that scaling design to larger capacity systems can be easily carried out.
Book Synopsis Separation of Isotopes of Biogenic Elements in Two-phase Systems by : Boris Mikhailovich Andreev
Download or read book Separation of Isotopes of Biogenic Elements in Two-phase Systems written by Boris Mikhailovich Andreev and published by Elsevier. This book was released on 2006-12-01 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Separation of Isotopes of Biogenic Elements provides a detailed overview of this area of research covering all aspects from the value of isotope effects to their practical use (equilibrium single-stage isotope effect - kinetics and mass transfer – multiplication of the single-stage isotope separation factor - technological peculiarity of processes) with the purpose of extraction from the natural mixture of the enriched and highly concentrated isotopes. In contrast to traditional books on the theory of isotope separation, the theoretical part of the book describes separation in two-phase processes in counter-flow columns. The experimental part of the book presents systematic analysis of specialists in the field of isotope separation in counter-flow columns. This book will be of interest to scientists, engineers and technical workers engaged in isotope separation processes and isotope application in nuclear physics, medicine, agro-chemistry, biology and other areas. This book may also be used in teaching theory and practical aspects in courses on physical chemistry and Isotope separation of light elements by physicochemical methods. * summarises current state of isotope research, especially biogenic elements* covering all aspects from the value of isotope effects to their practical use* of interest to scientists, engineers and technical workers engaged in isotope separation processes and isotope application
Book Synopsis Isotope Separation and Isotope Exchange by :
Download or read book Isotope Separation and Isotope Exchange written by and published by . This book was released on 1953 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Isotope Separation by Selective Excited State Photochemistry. Progress Report, June 1, 1975--February 29, 1976 by :
Download or read book Laser Isotope Separation by Selective Excited State Photochemistry. Progress Report, June 1, 1975--February 29, 1976 written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 Rb2* for isotope separation. However, our main efforts have concentrated on understanding and improving the laser isotope separation of 35Cl and 37Cl 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. Selective excitation of I37Cl with a tunable cw dye laser causes identical degrees of isotope enrichment in both products. By the use of an I35Cl cell placed inside the cavity of the dye laser, the 35Cl:37Cl ratio may be changed from 3:1 (natural abundance) to greater than 1:15. A competing pathway, cis-trans isomerization of starting material, also occurs and is the fastest reaction. The stereospecificity of the reaction and the relative rate of geometrical isomerization to substitution are the same when chlorine atoms, formed by the photodissociation of ICl or Cl2, are scavenged by dibromoethylene. We conclude that, kinetically, ICl* acts as a free chlorine atom. That isotope separation is achieved by a free-radical scavenging mechanism is indeed remarkable and owes its success to the structure of the scavenger and the choice of initial conditions.
Book Synopsis Some Approaches to Photochemical and Photophysical Separation of Isotopes by :
Download or read book Some Approaches to Photochemical and Photophysical Separation of Isotopes written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Isotope Separation by Selective Excited State Photochemistry. Annual Progress Report, March 31, 1976--February 28, 1977 by :
Download or read book Laser Isotope Separation by Selective Excited State Photochemistry. Annual Progress Report, March 31, 1976--February 28, 1977 written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental results are presented providing insight into the mechanisms of photochemical separation of Cd isotopes by selective excitation of ICl in the presence of halogenated olefins. The types of scrambling reactions that can be expected in isotope separation by scavenging are discussed along with strategies for minimizing such reactions. The experimental results are summarized and the reaction mechanisms are represented by graphic equations. (JRD).
Book Synopsis Isotope Separation by Laser Means by :
Download or read book Isotope Separation by Laser Means written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A process for separating isotopes by selective excitation of isotopic species of a volatile compound by tuned laser light. A highly cooled gas of the volatile compound is produced in which the isotopic shift is sharpened and defined. Before substantial condensation occurs, the cooled gas is irradiated with laser light precisely tuned to a desired wavelength to selectively excite a particular isotopic species in the cooled gas. The laser light may impart sufficient energy to the excited species to cause it to undergo photochemical reaction or even to photoionize. Alternatively, a two-photon irradiation may be applied to the cooled gas to induce photochemical reaction or photoionization. The process is particularly applicable to the separation of isotopes of uranium and plutonium.
Book Synopsis Chemical Exchange as a Versatile Isotope Separation Process by : G. H. Clewett
Download or read book Chemical Exchange as a Versatile Isotope Separation Process written by G. H. Clewett and published by . This book was released on 1950 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Introduction to Laser Isotope Separation by : Los Alamos Scientific Laboratory. Applied Photochemistry Division
Download or read book Introduction to Laser Isotope Separation written by Los Alamos Scientific Laboratory. Applied Photochemistry Division and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Photochemical Separation of the Uranium Isotopes by : Horst Struve
Download or read book The Photochemical Separation of the Uranium Isotopes written by Horst Struve and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hybrid Isotope Separation Scheme by :
Download or read book Hybrid Isotope Separation Scheme written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A method of yielding selectively a desired enrichment in a specific isotope including the steps of inputting into a spinning chamber a gas from which a scavenger, radiating the gas with a wave length or frequency characteristic of the absorption of a particular isotope of the atomic or molecular gas, thereby inducing a photochemical reaction between the scavenger, and collecting the specific isotope-containing chemical by using a recombination surface or by a scooping apparatus.
