Phenomenon of skipping sparks in discharges on a dielectric surface
- Univ. of Minnesota, Minneapolis, MN (United States). Dept. of Electrical Engineering
Gliding sparks are associated with channel breakdown in air near a corona precharged dielectric layer backed by ground. Characterized by high current, their bright channels usually end in sudden branching/dimming. Infrequently, there occur cases in which channel brightness is interrupted, with no evident local branching but a new leader continuing on propagating after momentary delay. This skipping-spark phenomenon has been studied in an experimental system intended for taking Kirlian photographs. Operated in a Lichtenberg-figure mode, the method yields evidence in some detail. The authors report on observations of spark-channel touchdown and subsequent rebounding. A model based on nonuniform surface charging is proposed for explanation.
- OSTI ID:
- 372154
- Journal Information:
- IEEE Transactions on Industry Applications, Journal Name: IEEE Transactions on Industry Applications Journal Issue: 4 Vol. 32; ISSN 0093-9994; ISSN ITIACR
- Country of Publication:
- United States
- Language:
- English
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