Electron-Ion Recombination in a Sonic Orifice Flow.
GRUMMAN AEROSPACE CORP BETHPAGE N Y RESEARCH DEPT
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A comparison is made of measured and predicted axial variations of flow properties in a freely expanding plasma. Surveys of ion density and electron temperature were obtained in an arc-heated argon flow produced by expansion from a 0.635 cm diameter sonic orifice. Measurements were taken from current-voltage characteristics produced by uncooled electrostatic probes that were swept rapidly through the high temperature free jet. The flow field calculations were based on an approximate analysis developed by Talbot, Chou, and Robben. Application of their analysis required modification to account for thermal nonequilibrium at the orifice. A further modification adopted a specific total density distribution that was empirically deduced. Author
- Fluid Mechanics
- Plasma Physics and Magnetohydrodynamics