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Title: Characteristic features of the photolysis of UF{sub 6} molecules in a mixture with hydrogen by radiation from a repetitively pulsed CF{sub 4} laser

Abstract

Uranium hexafluoride molecules were photolysed in the presence of hydrogen by focused radiation of a repetitively pulsed CF{sub 4} laser ({lambda}=16 {mu}m) with an energy of {approx}100 mJ per pulse at a pulse repetition rate 2 - 3.5 Hz. In the presence of hydrogen the yield of the photolysis of UF{sub 6} molecules was an order of magnitude higher than without hydrogen and the number of molecules photolysed per pulse was 3 - 5.5 times higher than their number in a zone where the radiation density exceeded the dissociation threshold. This effect was attributed to laser activation of UF{sub 6} molecules inside and outside this zone, and to a subsequent reaction of the activated molecules with hydrogen. In the presence of hydrogen the yield of the photolysis of UF{sub 6} molecules decreased from pulse to pulse practically proportionally to the change in the density of UF{sub 6} molecules, which was the result of reactions of the newly formed hydrogen radicals with activated and nonactivated UF{sub 6} molecules, and the rates of these reactions depended quadratically on the UF{sub 6} density before each pulse. (interaction of laser radiation with matter)

Authors:
; ; ; ;  [1]
  1. State Research Center of Russian Federation 'Troitsk Institute for Innovation and Fusion Research', Troitsk, Moscow Region (Russian Federation)
Publication Date:
OSTI Identifier:
21437791
Resource Type:
Journal Article
Journal Name:
Quantum Electronics (Woodbury, N.Y.)
Additional Journal Information:
Journal Volume: 28; Journal Issue: 7; Other Information: DOI: 10.1070/QE1998v028n07ABEH001280; Journal ID: ISSN 1063-7818
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; CARBON TETRAFLUORIDE; DISSOCIATION; HYDROGEN; INTERACTIONS; LASER RADIATION; MIXTURES; MOLECULES; PHOTOLYSIS; URANIUM HEXAFLUORIDE; ACTINIDE COMPOUNDS; CHEMICAL REACTIONS; DECOMPOSITION; DISPERSIONS; ELECTROMAGNETIC RADIATION; ELEMENTS; FLUORIDES; FLUORINATED ALIPHATIC HYDROCARBONS; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; HALOGENATED ALIPHATIC HYDROCARBONS; NONMETALS; ORGANIC COMPOUNDS; ORGANIC FLUORINE COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; PHOTOCHEMICAL REACTIONS; RADIATIONS; URANIUM COMPOUNDS; URANIUM FLUORIDES

Citation Formats

Baranov, V Yu, Kolesnikov, Yu A, Kotov, A A, Novikov, V P, and Razumov, A S. Characteristic features of the photolysis of UF{sub 6} molecules in a mixture with hydrogen by radiation from a repetitively pulsed CF{sub 4} laser. United States: N. p., 1998. Web. doi:10.1070/QE1998V028N07ABEH001280.
Baranov, V Yu, Kolesnikov, Yu A, Kotov, A A, Novikov, V P, & Razumov, A S. Characteristic features of the photolysis of UF{sub 6} molecules in a mixture with hydrogen by radiation from a repetitively pulsed CF{sub 4} laser. United States. https://doi.org/10.1070/QE1998V028N07ABEH001280
Baranov, V Yu, Kolesnikov, Yu A, Kotov, A A, Novikov, V P, and Razumov, A S. 1998. "Characteristic features of the photolysis of UF{sub 6} molecules in a mixture with hydrogen by radiation from a repetitively pulsed CF{sub 4} laser". United States. https://doi.org/10.1070/QE1998V028N07ABEH001280.
@article{osti_21437791,
title = {Characteristic features of the photolysis of UF{sub 6} molecules in a mixture with hydrogen by radiation from a repetitively pulsed CF{sub 4} laser},
author = {Baranov, V Yu and Kolesnikov, Yu A and Kotov, A A and Novikov, V P and Razumov, A S},
abstractNote = {Uranium hexafluoride molecules were photolysed in the presence of hydrogen by focused radiation of a repetitively pulsed CF{sub 4} laser ({lambda}=16 {mu}m) with an energy of {approx}100 mJ per pulse at a pulse repetition rate 2 - 3.5 Hz. In the presence of hydrogen the yield of the photolysis of UF{sub 6} molecules was an order of magnitude higher than without hydrogen and the number of molecules photolysed per pulse was 3 - 5.5 times higher than their number in a zone where the radiation density exceeded the dissociation threshold. This effect was attributed to laser activation of UF{sub 6} molecules inside and outside this zone, and to a subsequent reaction of the activated molecules with hydrogen. In the presence of hydrogen the yield of the photolysis of UF{sub 6} molecules decreased from pulse to pulse practically proportionally to the change in the density of UF{sub 6} molecules, which was the result of reactions of the newly formed hydrogen radicals with activated and nonactivated UF{sub 6} molecules, and the rates of these reactions depended quadratically on the UF{sub 6} density before each pulse. (interaction of laser radiation with matter)},
doi = {10.1070/QE1998V028N07ABEH001280},
url = {https://www.osti.gov/biblio/21437791}, journal = {Quantum Electronics (Woodbury, N.Y.)},
issn = {1063-7818},
number = 7,
volume = 28,
place = {United States},
year = {Fri Jul 31 00:00:00 EDT 1998},
month = {Fri Jul 31 00:00:00 EDT 1998}
}