An avalanche of runaway electrons formed in an air discharge

International Congress on Energy Fluxes and Radiation Effects

Oreshkin, E.V.^1,2 ; Barengolts, S.A.^1,2 ; Chaikovsky, S.A.^1,3 ; Oreshkin, V.I.^3,4

P. N. Lebedev Physical Institute, RAS, Leninsky pr. 53, Moscow

119333, Russia^1

A. M. Prokhorov General Physics Institute, RAS, Vavilova 38, Moscow

119333, Russia^2

Institute of High Current Electronics SB RAS, 2/3 Academichesky ave., Tomsk

634055, Russia^3

Tomsk Polytechnic University, Tomsk Tomsk Polytechnic University, pr. Lenina 30, Tomsk

634050, Russia^4

关键词: Air discharge;    Emission zone;    Fast electrons;    Runaway electrons;    Two-dimensional equations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/552/1/012023/pdf
DOI  :  10.1088/1742-6596/552/1/012023

来源: IOP

【 摘 要 】

A numerical simulation of a beam of runaway electrons formed from an individual emission zone on a cathode has been performed for discharges in air of atmospheric pressure. The model is based on solving numerically two-dimensional equations of motion for the electrons and allows one to describe the dynamics of the fast electrons injected from the surface of the emission zone. In calculations it was supposed that the electric field at the surface of the emission zone is enhanced due to which conditions are realized for the electrons injected from the surface to switch into the mode of continuous acceleration.