Mechanism of fast surface flashover in vacuum
- 15 January 1974
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 24 (2) , 54-56
- https://doi.org/10.1063/1.1655091
Abstract
Insulator samples of Plexiglas and alumina ceramic in vacuum have been subjected to high‐voltage pulses with rise times of a few nanoseconds. Breakdown paths were inclined to the electric field in the presence of a magnetic field normal to the insulator surface, analogous to the Hall effect for bulk conduction. These results, as well as measurements of the flashover propagation velocity, strongly support a model of the flashover mechanism based on secondary electron emission.Keywords
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