Mechanism of dark decomposition of iodine donor in the active medium of a pulsed chemical oxygen - iodine laser

Journal Article · Sun Jun 30 04:00:00 EDT 2002 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2002V032N06ABEH002228· OSTI ID:21470184

Andreeva, Tamara L; Kuznetsova, S V; Maslov, A I; Sorokin, Vadim N ^[1]

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1. P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

A scheme is proposed that describes the dark decomposition of iodide - the donor of iodine - and the relaxation of singlet oxygen in the chlorine-containing active medium of a pulsed chemical oxygen - iodine laser (COIL). For typical compositions of the active media of pulsed COILs utilising CH{sub 3}I molecules as iodine donors, a branching chain reaction of the CH{sub 3}I decomposition accompanied by the efficient dissipation of singlet oxygen is shown to develop even at the stage of filling the active volume. In the active media with CF{sub 3}I as the donor, a similar chain reaction is retarded due to the decay of CF{sub 3} radicals upon recombination with oxygen. The validity of this mechanism is confirmed by a rather good agreement between the results of calculations and the available experimental data. The chain decomposition of alkyliodides accompanied by an avalanche production of iodine atoms represents a new way of efficient chemical production of iodine for a COIL. (active media)

• OSTI ID: 21470184
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 6 Vol. 32; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BRANCHING RATIO
CHAIN REACTIONS
CHEMICAL LASERS
CHEMICAL REACTIONS
CHLORINE
DATA
DECOMPOSITION
DIMENSIONLESS NUMBERS
ELEMENTS
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENS
INFORMATION
IODIDES
IODINATED ALIPHATIC HYDROCARBONS
IODINE
IODINE COMPOUNDS
LASERS
METHYL IODIDE
MOLECULES
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
OXYGEN
RADICALS
RECOMBINATION
RELAXATION