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A. V. Lazarev, N. N. Zastenker, D. N. Trubnikov
Quasiclassical
approximation for elastic collision frequency at low temperatures
Abstract
For the
Lennard–Jones potential in the quasiclassical approximation, the expression for
the elastic collision frequency was obtained as an expansion over reduced
temperature T*. The zero approximation (T* ® 0) takes account only of
the influence of an attractive part of potential as the first approximation is
concerned with the influence of a potential depth. For the temperatures of
interest in the supersonic jet expansion, it was shown that calculation of the
collision frequency can be limited in the zero approximation.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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