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Instruments and methods of investigation


Explosive emission processes in thermonuclear facilities with magnetic plasma confinement and in linear electron—positron colliders

†  a, b, c, ‡  b
a Prokhorov General Physics Institute of the Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russian Federation
b Lebedev Physical Institute, Russian Academy of Sciences, Leninsky prosp. 53, Moscow, 119991, Russian Federation
c Institute of Electrophysics, Ural Branch of the Russian Academy of Sciences, ul. Amundsena 106, Ekaterinburg, 620016, Russian Federation

A model of the phenomenon of explosive electron emission based on its similarity to the electrical explosion of conductors is presented. With this model, the microexplosive processes occurring on a cathode surface due to the action of the explosive emission current have been simulated. The simulation results have been used to analyze explosive emission processes caused by the operation of unipolar arcs in thermonuclear reactors with magnetic plasma confinement and by the initiation of radiofrequency vacuum breakdowns in the accelerating structures of linear electron—positron colliders. The structure of the arc discharge cathode spot and the erosion characteristics have been investigated for nanostructured tungsten (W-fuzz) surfaces formed in thermonuclear reactors with magnetic plasma confinement. For radiofrequency vacuum breakdowns, the initiating parameters have been estimated, and prebreakdown and microexplosive processes have been simulated.

Fulltext pdf (1.4 MB)
Fulltext is also available at DOI: 10.3367/UFNe.2022.02.039163
Keywords: pulsed vacuum breakdown, explosive electron emission, unipolar arc, cathode spot, field emission, radiofrequency vacuum breakdown
PACS: 52.40.Hf, 52.80.Vp, 79.70.+q (all)
DOI: 10.3367/UFNe.2022.02.039163
URL: https://ufn.ru/en/articles/2023/7/d/
001097028100004
2-s2.0-85182877942
2023PhyU...66..704B
Citation: Barengolts S A, Mesyats G A "Explosive emission processes in thermonuclear facilities with magnetic plasma confinement and in linear electron—positron colliders" Phys. Usp. 66 704–721 (2023)
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Received: 25th, January 2022, 28th, February 2022

Оригинал: Баренгольц С А, Месяц Г А «Взрывоэмиссионные процессы в термоядерных установках с магнитным удержанием плазмы и линейных электрон-позитронных коллайдерах» УФН 193 751–769 (2023); DOI: 10.3367/UFNr.2022.02.039163

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