Simulation of a runaway electron avalanche developing in an atmospheric pressure air discharge

E. V. Oreshkin, S. A. Barengolts, S. A. Chaikovsky, V. I. Oreshkin

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

To gain a better understanding of the operation of atmospheric pressure air discharges, the formation of a runaway electron beam at an individual emission site on the cathode has been numerically simulated. The model provides a description of the dynamics of the fast electrons emitted into an air gap from the surface of the emission zone by solving numerically two-dimensional equations for the electrons. It is supposed that the electric field at the surface of the emission zone is enhanced, providing conditions for continuous acceleration of the emitted electrons. It is shown that the formation of a runaway electron beam in a highly overvolted discharge is largely associated with avalanche-type processes and that the number of electrons in the avalanche reaches 50% of the total number of runaway electrons.

Original languageEnglish
Article number123505
JournalPhysics of Plasmas
Volume22
Issue number12
DOIs
Publication statusPublished - 1 Dec 2015

ASJC Scopus subject areas

  • Condensed Matter Physics

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