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Transport‐Querschnitte für ein abgeschnittenes Coulomb‐Potential
Author(s) -
Suchy Kurt
Publication year - 1964
Publication title -
beiträge aus der plasmaphysik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0005-8025
DOI - 10.1002/ctpp.19640040109
Subject(s) - physics , action (physics) , coulomb , logarithm , kinetic energy , classical mechanics , relaxation (psychology) , limit (mathematics) , relative velocity , quantum mechanics , electron , mathematics , mathematical analysis , psychology , social psychology
The velocity dependent and velocity averaged transport cross sections, which appear in the kinetic theory of gases for large and weak deviations from thermodynamic equilibrium, are calculated for a Coulomb potential being constant outside an „action sphere” around a collided particle. In the limit case of large relative speeds they have the usual logarithmic factor; for small relative speeds the „action sphere” gives the same results as a rigid sphere for repulsion as well as for attraction. — The applicability of the calculated transport cross sections to various relaxation and transport problems is concisely described in the last section.