Measurement of the temperature profile of a weakly ionized plasma by Rayleigh scattering imaged through an atomic filter
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The possibility of measuring the neutral gas temperature profile of a weakly ionized plasma using ultraviolet Rayleigh scattering together with an atomic resonance filter containing mercury vapor is discussed. The plasma is illuminated with a high power, very narrow linewidth, pulsed ultraviolet laser, which is tuned into resonance with mercury atomic vapor. For density measurement, the laser is frequency tuned very close to the cut-off edge of the mercury vapor filter. Model calculations show that the temperature dependence of the signal ranges from T0.8 to T1.5. Since the measurements are made through an atomic vapor filter, imaging can be preserved, and a profile can be measured.
name of conference
25th International Conference on Plasma Sciences
25th Anniversary, IEEE Conference Record - Abstracts. 1998 IEEE International Conference on Plasma Science (Cat. No.98CH36221)
author list (cited authors)
Miles, R. B., Macheret, S. O., Ionikh, Y., Finkelstein, N., & Yalin, A.
complete list of authors
Miles, RB||Macheret, SO||Ionikh, Y||Finkelstein, N||Yalin, A