LOW-VOLTAGE ARC STUDIES. PART V.
Final rept. no. 12, 1 Jun 63-31 Dec 66,
MICHIGAN UNIV ANN ARBOR ELECTRON PHYSICS LAB
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A summary of the first four parts of the Final Report is presented. In Parts I, II and III, analytical models are developed to study various aspects of the behavior of plasmas such as are present in the low-voltage arc. The approach in Part I is based on the transport equation and concentrates on the time-dependent behavior of the plasma. In Part II a ballistic model is used and the existence and propagation of waves in the plasma are investigated. Such waves arising from plasma oscillations are normally present in gas discharges and probably play an important part in energy exchange. Part III describes a Monte Carlo simulation of the low-voltage arc which incorporates many effects such as inelastic collisions which are virtually impossible to include in any other form of mathematical model. A detailed experimental investigation of the low-voltage arc in noble gases is described in Part IV, some results of which are used in Part III. Measurements were made in neon, xenon, and argon of the potential distribution, electron density distribution and electron temperature. Cumulative ionization was investigated by introducing a small amount of hydrogen. The results indicate that this is an important mechanism. Some measurements were made on the effect of impurities which indicate that impurity effects were negligible in all of the other measurements. Author
- Electric Power Production and Distribution
- Plasma Physics and Magnetohydrodynamics