Mechanism of initiating the process of switching a short vacuum gap by an auxiliary spark discharge

S. G. Davydov, A. N. Dolgov, A. A. Kozlov, V. A. Maksimov, V. O. Revazov, R. H. Yakubov

All-Russia Research Institute of Automatics named after N L Dukhov, Moscow, Russia

Abstract: The results and analysis of experiments are presented, the purpose of which is to study the mechanism of ignition of a high-voltage arc discharge in a vacuum gap. The results indicate that the development of an arc discharge under the presented conditions is occurs mainly due to the ionization of the residual gas by a flow of overheated electrons with an energy of $\sim$100–500 eV from an auxiliary spark discharge.

Keywords: vacuum arc, spark discharge, plasma, magnetic field.

Received: 23.05.2023
Revised: 22.06.2023
Accepted: 11.07.2023

DOI: 10.21883/PJTF.2023.17.56088.19637

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