Technical Physics Letters
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- 2022
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.
1
1Institute 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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