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Method of isotope separation

Patent:

Abstract

Isotopes of a gaseous compound can be separated by multi-infrared photoabsorption which follows a selective dissociation of the excited molecules by single photon absorption of photons of visible or UV radiation. The process involves three steps. Firstly, the molecules to be separated are irradiated with a high-energy IR laser, whereby the molecules of the compound containing the lighter isotopes are preferably excited. They are then irradiated by a second laser with UV or visible light whose frequency of radiation brings the excited molecules into a form in which they can be separated from the non-excited molecules. The third step is the reformation of the substances according to known methods. A power density of at least 10/sup 4/ watt/cm/sup 2/ per torr gas pressure with an irradiation time of 10/sup -10/ to 5 x 10/sup -5/ seconds in the presence of a second gas with at least 5 times higher partial pressure is necessary for the IR radiation. The method may be used for UF/sub 6/ for which an example is given here.
Authors:
Publication Date:
May 22, 1975
Product Type:
Patent
Report Number:
DE 2449424; A
Reference Number:
AIX-07-273323; EDB-77-022761
Resource Relation:
Other Information: 2 figs
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; LASER ISOTOPE SEPARATION; URANIUM ISOTOPES; INFRARED RADIATION; ULTRAVIOLET RADIATION; URANIUM HEXAFLUORIDE; VISIBLE RADIATION; ACTINIDE COMPOUNDS; ACTINIDE ISOTOPES; ELECTROMAGNETIC RADIATION; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; ISOTOPE SEPARATION; RADIATIONS; SEPARATION PROCESSES; URANIUM COMPOUNDS; URANIUM FLUORIDES; 050503* - Nuclear Fuels- Uranium Enrichment- Laser Excitation- (-1989); 400203 - Isotope Exchange & Isotope Separation- (-1987)
OSTI ID:
7329405
Country of Origin:
Germany
Language:
German
Submitting Site:
INIS
Size:
Pages: 21
Announcement Date:
Dec 01, 1976

Patent:

Citation Formats

Lyon, R K. Method of isotope separation. Germany: N. p., 1975. Web.
Lyon, R K. Method of isotope separation. Germany.
Lyon, R K. 1975. "Method of isotope separation." Germany.
@misc{etde_7329405,
title = {Method of isotope separation}
author = {Lyon, R K}
abstractNote = {Isotopes of a gaseous compound can be separated by multi-infrared photoabsorption which follows a selective dissociation of the excited molecules by single photon absorption of photons of visible or UV radiation. The process involves three steps. Firstly, the molecules to be separated are irradiated with a high-energy IR laser, whereby the molecules of the compound containing the lighter isotopes are preferably excited. They are then irradiated by a second laser with UV or visible light whose frequency of radiation brings the excited molecules into a form in which they can be separated from the non-excited molecules. The third step is the reformation of the substances according to known methods. A power density of at least 10/sup 4/ watt/cm/sup 2/ per torr gas pressure with an irradiation time of 10/sup -10/ to 5 x 10/sup -5/ seconds in the presence of a second gas with at least 5 times higher partial pressure is necessary for the IR radiation. The method may be used for UF/sub 6/ for which an example is given here.}
place = {Germany}
year = {1975}
month = {May}
}