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

Journal Article · Fri Jul 31 00:00:00 EDT 1998 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE1998V028N07ABEH001280· OSTI ID:21437791

Baranov, V Yu; Kolesnikov, Yu A; Kotov, A A; Novikov, V P; Razumov, A S ^[1]

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1. State Research Center of Russian Federation 'Troitsk Institute for Innovation and Fusion Research', Troitsk, Moscow Region (Russian Federation)

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)

• OSTI ID: 21437791
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 28, Issue 7; Other Information: DOI: 10.1070/QE1998v028n07ABEH001280; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

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