A. I. Parkhomenko and A. M. Shalagin*
Institute of Automatics and Electrometry,
Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090 Russia
*e-mail: shalagin@iae.nsk.su
Received December 28, 1999
Abstract—The collisional transfer of nonequilibrium in the velocity distribution of resonant particles in a laser
radiation field is investigated theoretically. It is shown numerically that the transfer effect is weak. This makes
it possible to use simpler approximate one-dimensional quantum kinetic equations instead of three-dimensional
equations to solve spectroscopy and light-induced gas kinetics problems, where it is important to take account
of the velocity dependence of the collision frequency. It is shown for anomalous light-induced drift, calculations
of which are most sensitive to neglecting the transfer effect, that in a wide range of spectroscopy and light-
induced gas kinetics problems the transfer of nonequilibrium can be neglected without risking the loss of impor-
tant fine details of the phenomena being described. © 2000 MAIK “Nauka/Interperiodica”.
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