Increasing the electric strength of vacuum insulation by irradiating the electrodes with a low-energy high-current electron beam

Author

Batrakov, A.V. ; Nazarov, D.S. ; Ozur, G.E. ; Popov, S.A. ; Proskurovsky, D.I. ; Rotshtein, V.P.

Author_Institution

Inst. of High-Current Electron., Acad. of Sci., Tomsk, Russia

Volume

4

Issue

6

fYear

1997

fDate

12/1/1997 12:00:00 AM

Firstpage

857

Lastpage

862

Abstract

The paper describes how irradiation of the electrode surface with a LEHCEB (low-energy high-current electron beam) affects the prebreakdown current and the electric strength of vacuum insulation. This study is an extension of a study described earlier. Experiments have been performed for 0.1 mm vacuum gaps formed by refractory metal electrodes and for millimeter vacuum gaps with a pulsed voltage of amplitude 250 kV and duration 30 to 100 ns, both in a high oil-free vacuum and in technical-grade oil vacuum. Based on the results obtained, it is stated that the LEHCEB irradiation of electrode surfaces is a promising technique for increasing the electric strength of vacuum insulation over a wide range of voltages and under varied vacuum conditions

Keywords

electric strength; electrodes; electron beam effects; vacuum breakdown; vacuum insulation; 0.1 mm; 1 mm; 250 kV; 30 to 100 ns; electric strength; low-energy high-current electron beam irradiation; prebreakdown current; refractory metal electrode surface; technical-grade oil; vacuum gap; vacuum insulation; Current-voltage characteristics; Dielectrics and electrical insulation; Electrodes; Electron beams; Impurities; Steel; Surface treatment; Vacuum breakdown; Vacuum technology; Voltage;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.654730

Filename

654730