First Negative Corona Pulses in 70% N2+30%SF6Mixture
- 1 October 1989
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 28 (10R) , 1989-1996
- https://doi.org/10.1143/jjap.28.1989
Abstract
Waveforms of the first negative corona current pulses in a 70% N2+30% SF6mixture at pressures of 13.33, 26.66 and 40 kPa have been studied as a function of overvoltage ranging from 0 to 100%. Near the corona threshold, the pulses, taking the form of a simple hump, are governed by the secondary electron emission due to a positive-ion impact. At moderate overvoltage, the formation of a double-peaked pulse was observed. This phenomenon can be explained in terms of the effect of photoemission and secondary electron emission. At higher overvoltages, peculiar current waveforms were observed. This phenomenon was explained by the association of the development of a cathode-directed streamer and its interaction with a cathode surface.Keywords
This publication has 21 references indexed in Scilit:
- Secondary electron emission in the course of the first Trichel-like pulse development in N/sub 2/+SF/sub 6/ mixturesIEEE Transactions on Electrical Insulation, 1989
- Initial Phases of Negative Point-to-Plane Breakdown in N2 and N2+10%CH4: Verification of Morrow's TheoryJapanese Journal of Applied Physics, 1988
- Initial Stages of Negative Point-to-Plane Breakdown in ArgonJapanese Journal of Applied Physics, 1988
- Initial Stages of Negative Point-to-Plane Breakdown in HeliumJapanese Journal of Applied Physics, 1987
- Negative point-to-plane corona pulses in oxygenJournal of Physics D: Applied Physics, 1986
- Theory of stepped pulses in negative corona dischargesPhysical Review A, 1985
- Probability of electrical breakdown: Evidence for a transition between the Townsend and streamer breakdown mechanismsPhysical Review A, 1985
- Review of high-voltage gas breakdown and insulators in compressed gasIEE Proceedings A Physical Science, Measurement and Instrumentation, Management and Education, Reviews, 1981
- Distribution of electric fields in a rod to plane gap at the onset of negative coronaProceedings of the Institution of Electrical Engineers, 1979
- Calculations of discharge initiation in overvolted parallel-plane gapsJournal of Applied Physics, 1974