Title :
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
fDate :
12/1/1997 12:00:00 AM
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;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
