Dynamics of prebreakdown phenomena in a uniform field in water

Author

Gavrilov, I.M. ; Kukhta, V.R. ; Lopatin, V.V. ; Petrov, P.G.

Author_Institution

Inst. for High Voltage, Tomsk, Russia

Volume

1

Issue

3

fYear

1994

fDate

6/1/1994 12:00:00 AM

Firstpage

496

Lastpage

502

Abstract

For a breakdown time lag of 10^-7 to 10^-3, both slow subsonic and thin supersonic streamers were found to emanate from a point electrode in deionized water (σ=5×10^-5 S/m). The slow streamer-formed dendrite probably consists of gaseous microbubbles. Relaxation of the slow streamers was studied. The development of fast streamers resulted from kinetic phase transition in the liquid, with subsequent ionization of thin discharge channels. It was shown that heating of water and electrohydrodynamic flow do not affect the prebreakdown phenomena under these conditions. A model has been proposed of an anodic supersonic streamer which is generated by the plasma in the condensed medium

Keywords

bubbles; electric breakdown of liquids; water; anodic streamer; breakdown time lag; deionized water; gaseous microbubbles; kinetic phase transition; prebreakdown phenomena; subsonic streamers; supersonic streamers; thin discharge channels; uniform field; Breakdown voltage; Cameras; Dielectric liquids; Electric breakdown; Electrodes; High speed optical techniques; Ionization; Optical pulse generation; Stimulated emission; Water heating;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.300293

Filename

300293