Gas Heating and Volume Recombination Effects on Positive Column Equilibria.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING
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A three moment model of the positive column is applied to an axisymmetric rare gas discharge at a pressure of 35 Torr and a tube radius of 1 cm. A three species fluid is considered. The ions and electrons are considered as perfect fluids and the background gas is modeled as a viscous, thermally conductive, compressible fluid. The zeroth order equilibrium equations are solved numerically for a model with gas heating and for a model with both gas heating and volume recombination. The results indicate an electron kinetic temperature gradient due to gas heating alone with temperatures of .769 ev at the axis and .497 ev at the wall for a current of 60 ma and a much smaller temperature gradient for lower currents. Modified author abstract
- Plasma Physics and Magnetohydrodynamics