Effect of cathode surface state on the characteristics of pulsed hollow-cathode glow discharges |
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Authors: | N V Gavrilov S E Romanov |
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Institution: | (1) Institute of Electrophysics, Urals Branch of the Russian Academy of Sciences, 620049 Ekaterinburg, Russia |
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Abstract: | A study is made of the effect of pulse repetition rate (0.1−103 s−1) and average discharge current (0–1 A) on the breakdown delay time and burning voltage of low-pressure glow discharges (p<0.1 Pa) in an electrode system of the reverse magnetron type with a large cathode surface area (≈103 cm2). It is shown that increasing the repetition rate leads to a many-fold reduction in the statistical spread in the delay time
and in the discharge formation time, while the average discharge current has a significant effect on the burning voltage.
The mechanism for the observed phenomena is interpreted qualitatively in terms of the presence of thin dielectric films on
the cathode surface.
Zh. Tekh. Fiz. 69, 20–24 (May 1999) |
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