Here is a picture from a very low vacuum run (just under 2000 microns). We found that the atmospheric plasma would only ignite up to 2000 microns, and that the low vacuum plasma was much redder in color. Also, this plasma would ignite at a much lower voltage (around -400V) as compared to the higher vacuum plasma at -1500V.
Friday, February 26, 2010
Low Vacuum Plasma
Here is a picture from a very low vacuum run (just under 2000 microns). We found that the atmospheric plasma would only ignite up to 2000 microns, and that the low vacuum plasma was much redder in color. Also, this plasma would ignite at a much lower voltage (around -400V) as compared to the higher vacuum plasma at -1500V.
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