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Erschienen in: Fluid Dynamics 6/2023

01.12.2023

Kinetic Theory of Expansion of Two-Component Plasma in a Plane Vacuum Diode

verfasst von: V. Yu. Kozhevnikov, A. V. Kozyrev, V. S. Igumnov, N. S. Semenyuk, A. O. Kokovin

Erschienen in: Fluid Dynamics | Ausgabe 6/2023

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Abstract

The results of study of the initial stage of expansion of a collisionless plasma with the electric current into a plane vacuum gap on the basis of kinetic equations for electrons and ions and the Poisson equation for the electric field are given. Self-consistent dynamics of a two-component plasma and electric field are theoretically modeled and the fundamental mechanism for establishing superthermal velocities of charged particles is described in detail. The parameters of anode-directed flows of positive ions in the cathode plume plasma are calculated. The expansion velocities of the cathode plume plasma observed in vacuum arcs at the level of (1−5) × 106 cm/s can be explained within the framework of the proposed collisionless mechanism.

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Metadaten
Titel
Kinetic Theory of Expansion of Two-Component Plasma in a Plane Vacuum Diode
verfasst von
V. Yu. Kozhevnikov
A. V. Kozyrev
V. S. Igumnov
N. S. Semenyuk
A. O. Kokovin
Publikationsdatum
01.12.2023
Verlag
Pleiades Publishing
Erschienen in
Fluid Dynamics / Ausgabe 6/2023
Print ISSN: 0015-4628
Elektronische ISSN: 1573-8507
DOI
https://doi.org/10.1134/S0015462823601900

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