Numerical simulation of steady-state and non-steady-state modes of a switching discharge in vacuum

被引：0

作者：

Barengolts, S. A. ^{[1
,2
]}

Mamontov, Yu. I. ^{[3
]}

Shmelev, D. L. ^{[3
,4
]}

Uimanov, I. V. ^{[3
]}

机构：

[1] RAS, AM Prokhorov Inst Gen Phys, Moscow 119991, Russia

[2] RAS, PN Lebedev Phys Inst, Moscow 119991, Russia

[3] RAS UB, Inst Electrophys, Ekaterinburg 620016, Russia

[4] Ural Fed Univ, Ekaterinburg 620002, Russia

来源：

PHYSICS OF PLASMAS | 2025年 / 32卷 / 01期

基金：

俄罗斯科学基金会;

关键词：

EMISSION;

D O I：

10.1063/5.0248953

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

This paper presents the results of a two-dimensional kinetic simulation of the switching of a vacuum gap by the cathode plasma flare. It is shown that, depending on the magnitude of the current passed through the vacuum gap, the gap can be switched in both a steady-state mode, in which the spark turns into a quasi-steady-state arc, and a non-steady-state quasi-periodic mode. The non-steady-state switching is associated with the occurrence of a current instability in the plasma, leading to rapid partial decay of the cathode flare plasma. In addition, it is shown that the instabilities arising in the plasma contribute to the broadening and shift of the energy distributions of the ions that have reached the anode. (c) 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/4.0/).

引用

页数：7