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Title: Effect of self-magnetic fields on the nonlinear dynamics of relativistic electron beam with virtual cathode

Abstract

The report is devoted to the results of the numerical study of the virtual cathode (VC) formation conditions in the relativistic electron beam (REB) under the influence of the self-magnetic and external axial magnetic fields. The azimuthal instability of the relativistic electron beam leading to the formation of the vortex electron structure in the system was found out. This instability is determined by the influence of the self-magnetic fields of the relativistic electron beam, and it leads to the decrease of the critical value of the electron beam current (current when the non-stationary virtual cathode is formed in the drift space). The typical dependencies of the critical current on the external uniform magnetic field value were discovered. The effect of the beam thickness on the virtual cathode formation conditions was also analyzed.

Authors:
;  [1];  [2];  [3]
  1. Saratov State University, Astrakhanskaja 83, Saratov 410012, Russia Saratov State Technical University, Politechnicheskaja 77, Saratov 410028 (Russian Federation)
  2. Saratov State University, Astrakhanskaja 83, Saratov 410012 (Russian Federation)
  3. Saratov State Technical University, Politechnicheskaja 77, Saratov 410028 (Russian Federation)
Publication Date:
OSTI Identifier:
22068867
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 19; Journal Issue: 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CATHODES; CRITICAL CURRENT; ELECTRON BEAMS; ELECTRONIC STRUCTURE; MAGNETIC FIELDS; NONLINEAR PROBLEMS; NUMERICAL ANALYSIS; PLASMA INSTABILITY; RELATIVISTIC RANGE

Citation Formats

Hramov, A. E., Koronovskii, A. A., Kurkin, S. A., and Filatova, A. E. Effect of self-magnetic fields on the nonlinear dynamics of relativistic electron beam with virtual cathode. United States: N. p., 2012. Web. doi:10.1063/1.4765062.
Hramov, A. E., Koronovskii, A. A., Kurkin, S. A., & Filatova, A. E. Effect of self-magnetic fields on the nonlinear dynamics of relativistic electron beam with virtual cathode. United States. doi:10.1063/1.4765062.
Hramov, A. E., Koronovskii, A. A., Kurkin, S. A., and Filatova, A. E. Thu . "Effect of self-magnetic fields on the nonlinear dynamics of relativistic electron beam with virtual cathode". United States. doi:10.1063/1.4765062.
@article{osti_22068867,
title = {Effect of self-magnetic fields on the nonlinear dynamics of relativistic electron beam with virtual cathode},
author = {Hramov, A. E. and Koronovskii, A. A. and Kurkin, S. A. and Filatova, A. E.},
abstractNote = {The report is devoted to the results of the numerical study of the virtual cathode (VC) formation conditions in the relativistic electron beam (REB) under the influence of the self-magnetic and external axial magnetic fields. The azimuthal instability of the relativistic electron beam leading to the formation of the vortex electron structure in the system was found out. This instability is determined by the influence of the self-magnetic fields of the relativistic electron beam, and it leads to the decrease of the critical value of the electron beam current (current when the non-stationary virtual cathode is formed in the drift space). The typical dependencies of the critical current on the external uniform magnetic field value were discovered. The effect of the beam thickness on the virtual cathode formation conditions was also analyzed.},
doi = {10.1063/1.4765062},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 19,
place = {United States},
year = {2012},
month = {11}
}