| Issue |
EPL
Volume 140, Number 3, November 2022
|
|
|---|---|---|
| Article Number | 34001 | |
| Number of page(s) | 5 | |
| Section | Nuclear and plasma physics, particles and fields | |
| DOI | https://doi.org/10.1209/0295-5075/ac9c8b | |
| Published online | 18 November 2022 | |
Analysis of processes leading to explosive phenomena on the surface of a liquid cathode at the time of the dc electric arc ignition
Joint Institute for High Temperatures of the Russian Academy of Sciences - Izhorskaya st. 13 Bd.2, Moscow, 125412, Russia
(a) E-mail: m.sargsyan86@mail.ru (corresponding author)
Received: 9 May 2022
Accepted: 21 October 2022
The paper considers various causes of explosions on the cathodes surface in the region of arc attachment in a direct current arc discharge. Estimates of the characteristic times of the development of instabilities during the passage of current through the liquid tip of the cathode are made. As a result, an assumption was put forward that, starting from the moment of formation of the stretched tip and up to the explosion, at different stages of the stretches development, various instabilities alternately play the main roles.
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