Vacuum surface flashover and high pressure gas streamers

J. M. Elizondo; M. L. Krogh; D. Smith; D. Stoltz; S. N. Wright; S. E. Sampayan; George J Caporaso; P. Vitello; N. Tishchenko

Vacuum surface flashover and high pressure gas streamers

J. M. Elizondo, M. L. Krogh, D. Smith, D. Stoltz, S. N. Wright, S. E. Sampayan, George J Caporaso, P. Vitello, N. Tishchenko

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

Pre-breakdown current traces obtained during high pressure gas breakdown and vacuum surface flashover show similar signatures. The initial pre-breakdown current spike, a flat constant current phase, and the breakdown phase with voltage collapse and current surge differ mostly in magnitude. Given these similarities, a model, consisting of the initial current spike corresponding to a fast precursor streamer (ionization wave led by a photoionizing front), the flat current stage as the heating or glow phase, and the terminal avalanche and gap closure, is applied to vacuum surface flashover. A simple analytical approximation based on the resistivity changes induced in the vacuum and dielectric surface is presented. The approximation yields an excellent fit to pre-breakdown time delay vs applied field for previously published experimental data. A detailed kinetics model that includes surface and gas contributions is being developed based in the initial approximation.

Original language	English (US)
Title of host publication	Digest of Technical Papers-IEEE International Pulsed Power Conference
Editors	G. Cooperstein, I. Vitkovitsky
Place of Publication	Piscataway, NJ, United States
Publisher	IEEE
Pages	1027-1032
Number of pages	6
Volume	2
State	Published - 1997
Externally published	Yes
Event	Proceedings of the 1997 11th International Pulsed Power Conference. Part 2 (of 2) - Baltimore, MD, USA Duration: Jun 29 1997 → Jul 2 1997

Other

Other	Proceedings of the 1997 11th International Pulsed Power Conference. Part 2 (of 2)
City	Baltimore, MD, USA
Period	6/29/97 → 7/2/97

ASJC Scopus subject areas

Electrical and Electronic Engineering

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Vacuum surface flashover and high pressure gas streamers. / Elizondo, J. M.; Krogh, M. L.; Smith, D.; Stoltz, D.; Wright, S. N.; Sampayan, S. E.; Caporaso, George J; Vitello, P.; Tishchenko, N.

Digest of Technical Papers-IEEE International Pulsed Power Conference. ed. / G. Cooperstein; I. Vitkovitsky. Vol. 2 Piscataway, NJ, United States : IEEE, 1997. p. 1027-1032.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Elizondo, JM, Krogh, ML, Smith, D, Stoltz, D, Wright, SN, Sampayan, SE, Caporaso, GJ, Vitello, P & Tishchenko, N 1997, Vacuum surface flashover and high pressure gas streamers. in G Cooperstein & I Vitkovitsky (eds), Digest of Technical Papers-IEEE International Pulsed Power Conference. vol. 2, IEEE, Piscataway, NJ, United States, pp. 1027-1032, Proceedings of the 1997 11th International Pulsed Power Conference. Part 2 (of 2), Baltimore, MD, USA, 6/29/97.

Elizondo, J. M. ; Krogh, M. L. ; Smith, D. ; Stoltz, D. ; Wright, S. N. ; Sampayan, S. E. ; Caporaso, George J ; Vitello, P. ; Tishchenko, N. / Vacuum surface flashover and high pressure gas streamers. Digest of Technical Papers-IEEE International Pulsed Power Conference. editor / G. Cooperstein ; I. Vitkovitsky. Vol. 2 Piscataway, NJ, United States : IEEE, 1997. pp. 1027-1032

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abstract = "Pre-breakdown current traces obtained during high pressure gas breakdown and vacuum surface flashover show similar signatures. The initial pre-breakdown current spike, a flat constant current phase, and the breakdown phase with voltage collapse and current surge differ mostly in magnitude. Given these similarities, a model, consisting of the initial current spike corresponding to a fast precursor streamer (ionization wave led by a photoionizing front), the flat current stage as the heating or glow phase, and the terminal avalanche and gap closure, is applied to vacuum surface flashover. A simple analytical approximation based on the resistivity changes induced in the vacuum and dielectric surface is presented. The approximation yields an excellent fit to pre-breakdown time delay vs applied field for previously published experimental data. A detailed kinetics model that includes surface and gas contributions is being developed based in the initial approximation.",

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AU - Sampayan, S. E.

AU - Caporaso, George J

AU - Vitello, P.

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AB - Pre-breakdown current traces obtained during high pressure gas breakdown and vacuum surface flashover show similar signatures. The initial pre-breakdown current spike, a flat constant current phase, and the breakdown phase with voltage collapse and current surge differ mostly in magnitude. Given these similarities, a model, consisting of the initial current spike corresponding to a fast precursor streamer (ionization wave led by a photoionizing front), the flat current stage as the heating or glow phase, and the terminal avalanche and gap closure, is applied to vacuum surface flashover. A simple analytical approximation based on the resistivity changes induced in the vacuum and dielectric surface is presented. The approximation yields an excellent fit to pre-breakdown time delay vs applied field for previously published experimental data. A detailed kinetics model that includes surface and gas contributions is being developed based in the initial approximation.

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