On the variety of triggering mechanisms of high-voltage breakdown in vacuum

Author

Batrakov, A.V. ; Onischenko, S.A. ; Proskurovsky, D.I. ; Johnson, D.J.

Author_Institution

Inst. of High Current Electron., Tomsk Polytech. Inst.

Volume

14

Issue

3

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

544

Lastpage

552

Abstract

The paper is devoted to study of the mechanisms responsible for vacuum breakdown as a whole and the total voltage effect in particular. Experiments at DC and pulsed voltages were carried out. It has been shown that there is no manifestation of the total voltage effect at DC voltages up to 20 kV. The strong dependence of hold-off on anode temperature was recognized at DC voltages while pulsed hold-off turned out to be almost the same with heating the electrodes. This gives a basis to consider gas desorption as an insufficient factor in the initiation of pulsed breakdown. An attempt to enhance hold-off with electrostatic removing of loosely bound particles with assistance of electron flow from a thermionic cathode was undertaken in the work. The approach turned out to be ineffective.

Keywords

anodes; desorption; thermionic cathodes; vacuum breakdown; anode temperature; electrodes; electron flow; electrostatic removal; gas desorption; high-voltage vacuum breakdown; pulsed breakdown; thermionic cathode; triggering mechanisms; Anodes; Breakdown voltage; Cathodes; Electric breakdown; Electrodes; Electrons; Electrostatics; Heating; Temperature dependence; Vacuum breakdown;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2007.369511

Filename

4225327