
Accession Number : AD0697368
Title : ELECTRON DISTRIBUTION FUNCTION IN A NONEQUIPARTITION PLASMA,
Corporate Author : STANFORD UNIV CALIF INST FOR PLASMA RESEARCH
Personal Author(s) : Viegas,J. R.
Report Date : MAR 1967
Pagination or Media Count : 103
Abstract : Solutions to the kinetic equation of a steady, homogeneous plasma of arbitrary degree of ionization subjected to strong electric fields are developed. Nonelastic as well as elastic encounters are included in the analysis. Expressions for the current density, electrical conductivity and electron temperature of the plasma are also presented. Numerical results are illustrated for the case when the nonelastic effects are neglected. Calculations are presented showing the transition of the isotropic part f(0) of the distribution function from a gastemperature Maxwellian at near equilibrium conditions to an electrontemperature Maxwellian under nonequipartition conditions. It was found that whenever the electronelectron to electronneutral collisionfrequency ratio was much greater than the electrontoheavyparticle mass ratio, f(0) is Maxwellian. When f(0) is Maxwellian, the ChapmanEnskog and SpitzerHarm conductivity expressions developed for the case of weak electric fields are shown to be applicable for strong electric fields providing that in these expressions the electron temperature replaces the gas temperature. (Author)
Descriptors : (*PLASMA MEDIUM, ELECTRON DENSITY), (*ELECTRON DENSITY, DISTRIBUTION FUNCTIONS), ELECTRIC FIELDS, TEMPERATURE, ELECTRICAL CONDUCTIVITY, KINETIC THEORY, THESES
Subject Categories : Plasma Physics and Magnetohydrodynamics
Distribution Statement : APPROVED FOR PUBLIC RELEASE