PREIONIZATION IN NON-EQUILIBRIUM PLASMAS.
Annual summary rept.,
GENERAL ELECTRIC CO PHILADELPHIA PA MISSILE AND SPACE DIV
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An experimental study of the preionization process in non-equilibrium plasmas has been started in a cesium-seeded argon mixture. The work is being performed in a boron nitride channel containing twelve electrode pairs, each equipped with a discharge holder at a gas stagnation temperature of 1500K, Mach numbers up to M 0.6 and transverse magnetic field strength up to B 22,500 gauss. For discharge currents of three amps, the results showed that steady, stable behavior was obtained up to M 0.6 for B 0, with the discharge holders fully effective in controlling the current path. However, discontinuous increases in electrode voltage were observed with magnetic field, and on the basis of probe readings it was concluded that the first discharge had jumped to the next adjacent holder downstream. Author
- Plasma Physics and Magnetohydrodynamics