Volume 48, Number 5, December 1999
|Page(s)||580 - 586|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||01 September 2002|
The strong-collision model for activated rate processes
Institute of Chemical Physics, Russian Academy of Sciences 117977, GSP-1, Kosygin str. 4, Moscow, Russia
Accepted: 30 September 1999
The strong-collision model (SCM) for friction (energy dissipation) in condensed phase processes is considered. SCM assumes the instantaneous relaxation of the velocity distribution of a probe particle in the medium to the thermal distribution after each collision with surrounding particles. SCM is applied to the analysis of the kinetics of the passage over a parabolic barrier. Simple formulas for the passing rate (both exact and approximate) are derived and analyzed in detail.
PACS: 82.20.Db – Statistical theories (including transition state) / 82.20.Mj – Nonequilibrium kinetics / 61.20.Lc – Time-dependent properties; relaxation
© EDP Sciences, 1999
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