High power water switches: Postbreakdown phenomena and dielectric recovery

Shu Xiao; J. Kolb; S. Kono; S. Katsuki; R. P. Joshi; M. Laroussi; K. H. Schoenbach

doi:10.1109/TDEI.2004.1324350

High power water switches: Postbreakdown phenomena and dielectric recovery

Shu Xiao, J. Kolb, S. Kono, S. Katsuki, R. P. Joshi, M. Laroussi, K. H. Schoenbach

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

40 Scopus citations

Abstract

The physical processes following the electrical breakdown of water between planar and hemispherical electrodes separated by a sub-millimeter gap have been studied using electrical and optical diagnostics. The expanding plasma column after breakdown generates first shockwaves and at a later stage a vapor bubble which expands for about 200 μs and then decays with a time constant of 1 ms. The bubble decay time determines the dielectric recovery of the switch as has been shown with pulse-probe experiments.

Original language	English
Pages (from-to)	604-612
Number of pages	9
Journal	IEEE Transactions on Dielectrics and Electrical Insulation
Volume	11
Issue number	4
DOIs	https://doi.org/10.1109/TDEI.2004.1324350
State	Published - Aug 2004

Keywords

Dielectric recovery
Electrical breakdown
Pulsed power switching
Shock-waves
Water

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10.1109/TDEI.2004.1324350

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AU - Laroussi, M.

AU - Schoenbach, K. H.

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