Abstract

Nonequilibrium ionization in a rare gas mixture containing a readily ionizable particle species can be used to replace rare gas-alkali mixtures. A rare gas plasma, consisting of neon and 2% xenon is produced in a gasdynamic-diaphragm shock tube with pressures between 220 and 840 torr and gas temperatures between 3700 and 5800 K. The electrical conductivity is determined from measurements of current density and potential profiles. It is also directly measured by the induction method. The theoretical treatment is based on a multicomponent theory in which the individual particle species in the plasma are treated separately and the interactions between the components are expressed by production and energy transfer rates in the conservation equations. The agreement between theoretical model results and experimental electrical conductivity measurements is good.

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