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ELECTRON DEGRADATION AND THERMALIZATION IN CH4 GAS

TitleELECTRON DEGRADATION AND THERMALIZATION IN CH4 GAS
Publication TypeJournal Article
Year of Publication1992
AuthorsKowari, K, Demeio, L, Shizgal, B
JournalJournal of Chemical Physics
Volume97
Pagination2061-2074
Date PublishedAug
Type of ArticleArticle
ISBN Number0021-9606
KeywordsAPPROXIMATION, equation, INITIAL PRODUCTS, NEUTRAL GASES, SPENCER-FANO, SUBEXCITATION ELECTRONS, SWARMS, TIME-DEPENDENT ASPECTS, TRANSPORT-COEFFICIENTS, VELOCITY DISTRIBUTION FUNCTION, YIELDS
Abstract

The relaxation to equilibrium of an ensemble of electrons dilutely dispersed in a large excess of CH4 is studied with solutions of the Boltzmann equation. Elastic and vibrationally inelastic collision processes are included in the analysis. The relaxation time for the approach to equilibrium defined for the relaxation of the average electron energy is determined for two different cross section sets. The kinetic theory formalism, based on the Boltzmann equation, is compared with the formalism used in radiation chemistry and physics and based on the Spencer-Fano equation.

URL<Go to ISI>://A1992JE89100051