Stability of runaway electron beam currents in nitrogen at 100 Torr. Experiments and numerical simulation

This paper reports on a series of identical experiments and on a respective particle-in-cell and Monte Carlo simulation to investigate the stability of runaway electron beam currents produced in nitrogen at a highly inhomogeneous electric field. The experiments demonstrate a strong effect of cathode...

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Bibliographic Details
Published in:Journal of applied physics 2017-03, Vol.121 (9)
Main Authors: Shklyaev, V. A., Baksht, E. Kh, Belomyttsev, S. Ya, Burachenko, A. G., Grishkov, A. A.
Format: Article
Language:English
Subjects:
Applied physics
Beam currents
Cathodes
Computer simulation
Electron beams
Emissivity
Experiments
Mathematical models
Monte Carlo simulation
Particle in cell technique
Plasma
Stability
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Summary:This paper reports on a series of identical experiments and on a respective particle-in-cell and Monte Carlo simulation to investigate the stability of runaway electron beam currents produced in nitrogen at a highly inhomogeneous electric field. The experiments demonstrate a strong effect of cathode emissivity on the beam current. The numerical simulation shows that the cathode emissivity influences not only the current of the beam but also the mechanisms of its formation.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4977865