The effect of pulsed electron beam and ion treatments of stainless steel electrodes on the electrical strength of vacuum gaps
Onischenko S. A.
1, Nefedtsev E. V.
11Institute of High Current Electronics, Siberian Branch, Russian Academy of Sciences, Tomsk, Russia
Email: nev@lve.hcei.tsc.ru
It is known that pulsed reflow of electrodes surface with low-energy high-current electron beam to a depth of several microns significantly increases the level of electrical strength of vacuum gaps. The paper presents experimental data indicating the possibility of additional 30% electrical strengthening of vacuum gaps based on steel (12Kh18N10T, Russian analog of AISI 304) electrodes by preliminary irradiating the electrodes (before their surface reflow) with ion flow extracted by a series of short negative bias voltage pulses from argon plasma with density ~ 1019 m-3. Keywords: electrical strength of vacuum gap, low-energy high-current electron beam, pulsed ion flow.
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