Effect of cathode surface properties on glow-to-arc transition in a short positive corona gap in ambient air
- 14 June 1995
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 28 (6) , 1126-1132
- https://doi.org/10.1088/0022-3727/28/6/015
Abstract
Measurements were made of current growth waveforms corresponding to the glow-to-arc transition in a 1 cm positive point-to-plane gap in conditions similar to those in pulsed corona devices used for flue gas cleaning. The glow-to-arc transition was significantly accelerated using a freshly polished unconditioned cathode surface. A duration of glow-to-arc transition as short as 25 ns was observed using a graphite-coated cathode. A possible explanation in terms of the cathode sheath break-ups is presented.Keywords
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