| Numéro |
J. Phys. Colloques
Volume 40, Numéro C7, Juillet 1979
XIVe Conférence Internationale sur les Phénomènes d'Ionisation dans les Gaz / XIVth International Conference on Phenomena in Ionized Gases
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| Page(s) | C7-401 - C7-402 | |
| DOI | https://doi.org/10.1051/jphyscol:19797196 | |
XIVe Conférence Internationale sur les Phénomènes d'Ionisation dans les Gaz / XIVth International Conference on Phenomena in Ionized Gases
J. Phys. Colloques 40 (1979) C7-401-C7-402
DOI: 10.1051/jphyscol:19797196
1 Department Elect. Eng., Texas Technical Unversity, Lubbock, TX 79409 U.S.A.
2 Department Elect. Eng., University South Carolina, Columbia, SC 29208, U.S.A.
J. Phys. Colloques 40 (1979) C7-401-C7-402
DOI: 10.1051/jphyscol:19797196
ELECTRO-OPTICAL MEASUREMENTS OF INSULATOR SURFACE FLASHOVER IN VACUUM
K. Mikkelson1, M. Kristiansen1, J. Lin2 et J. Thompson21 Department Elect. Eng., Texas Technical Unversity, Lubbock, TX 79409 U.S.A.
2 Department Elect. Eng., University South Carolina, Columbia, SC 29208, U.S.A.
Abstract
Electro-optical measurements of the electric field along insulator surfaces in vacuum during the few nanoseconds prior to insulator flashover have been made. The Pockels and the Kerr effect are used in conjunction with a polarization interferometer to measure the interfacial fields which have a risetime of a few ns. Insulator surface charging and cathode field enchancement occurs, followed by plasma formation near the cathode which propagates toward the anode at approximately one tenth the speed of light. Voltage collapse across the insulator occurs after the plasma formation has reached the anode.