Accession Number : AD0715928

Title :   Transport Analysis of a Thermionic Diode Plasma,

Corporate Author : RAND CORP SANTA MONICA CALIF

Personal Author(s) : Leonard,A.

Report Date : NOV 1970

Pagination or Media Count : 52

Abstract : The transport of electrons and ions in a thermionic converter is analyzed through a pair of Boltzmann equations and an electric field equation. Ionization of cesium neutrals in the gap is accounted for by electron impact with a speed-dependent ionization cross section. Transport of ions is approximately by diffusion theory, neglecting the electric field term that is inversely proportional to the ion mass. After linearizing the electric field term in the electron transport equation, a complete set of solutions to the system of homogeneous equations is determined; these homogeneous solutions form the basis for an expansion of the actual electron, ion, and electric field distributions existing in the converter gap. Finally, very general boundary conditions appropriate to thermionic converter operation are applied to an expansion of the solutions. (Author)

Descriptors :   (*THERMIONIC CONVERTERS, PLASMA MEDIUM), (*PLASMA MEDIUM, TRANSPORT PROPERTIES), ELECTRONS, IONS, CESIUM, SCATTERING, ELECTRIC FIELDS, INTEGRAL EQUATIONS, BOUNDARY VALUE PROBLEMS

Subject Categories : Electric Power Production and Distribution
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE