Investigation of the Production of High Density Uniform Plasmas. Volume I.
Final rept. 2 Apr 78-2 Apr 79,
AVCO EVERETT RESEARCH LAB INC EVERETT MA
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The discharge streamer instability, which leads to arcing in non self-sustaining discharges is investigated experimentally and theoretically. Framing camera studies of streamer growth from the cathode of an e-beam sustained discharge in various gases under various discharge conditions are discribed, analyzed, and compared with theoretical predictions. A previously developed model of the streamer is extended to include a more detailed description of the density, temperature, and input power distributions around the streamer tip. Stable high-density plasma discharges have many applications in plasma physics. An especially significant example is the use of these discharges in high-power gas lasers. The work described here concerns investigation of the external ionization e-beam sustainer method of producing a high-density discharge, together with the advantages and instabilities peculiar to that system.
- Plasma Physics and Magnetohydrodynamics