Observations about the universe, life, Lausanne and me

Thursday, April 12, 2007

Hollow Cathode Plasma

As promised yesterday, another photo of an argon-plasma. You can see the new electrode above, with different-sized holes in it. Each hole is a hollow cathode, and lights up under the right conditions, producing a much denser plasma than a flat electrode would. I also wanted to show you what happens if I increase neutral pressure and power, but then my flowmeter died - no more argon until I change it.

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