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Proceedings Paper

Multiquantum vibrational exchange in vibration-excited CO molecules
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Paper Abstract

Studies of vibration-vibration exchange in CO molecules excited up to vibration quantum numbers v=20 are performed both theoretically and expethnentally. New kinetic model taking into account muhi-quantum VV exchange in temperature range T=100Ö300K is described for the first time. Description of the experimental methodology allowing for studies of effects of relaxation of the vibrational distribution after a sudden disturbance is given. The disturbance of the vibrational distribution is produced by Q-switched short pulse of single line radiation in fundamental band The relaxation is studied by measuiing laser pulse energy of the second pulse initiated by resonator Q-switching produced with variable time delay relative to the first pulse. A set of kinetic rate constants accepted in the model for various gas temperatures, vibration level numbers and number of exehanged vibration quanta from 1 to 4 is presented. Good agreement between experiniental data and results of the advanced theory is the first direct evidence in support of multi-quantum exchange model.

Paper Details

Date Published: 25 January 2001
PDF: 4 pages
Proc. SPIE 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (25 January 2001); doi: 10.1117/12.414057
Show Author Affiliations
Andrei A. Ionin, P.N. Lebedev Physical Institute (Russia)
Yurii M. Klimachev, P.N. Lebedev Physical Institute (Russia)
Yuri B. Konev, Institute of High Temperatures (Russia)
Andrei A. Kotkov, P.N. Lebedev Physical Institute (Russia)
Alexander K. Kurnosov, Troitsk Institute for Innovation and Fusion Research (Russia)
Anatoly P. Napartovich, Troitsk Institute for Innovation and Fusion Research (Russia)
Leonid V. Seleznev, P.N. Lebedev Physical Institute (Russia)
Dmitrii V. Sinitsyn, P.N. Lebedev Physical Institute (Russia)
Yu. V. Terekhov, P.N. Lebedev Physical Institute (Russia)


Published in SPIE Proceedings Vol. 4184:
XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference

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