Complex Phase Dynamics of Overlimiting Electron Beams Propagating in Opposite Directions

Results of PIC simulation of the phase dynamics of counter-propagating overlimiting electron beams injected in opposite directions into various axially symmetric cavities are reviewed. Multiple examples of the complex dynamics of the beams are presented, in which virtual cathodes, phase-space holes,...

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Bibliographic Details
Published in:Physics of particles and nuclei 2022-08, Vol.53 (4), p.848-884
Main Authors: Dubinov, A. E., Saikov, S. K., Selemir, V. D., Tarakanov, V. P.
Format: Article
Language:English
Subjects:
Particle and Nuclear Physics
Physics
Physics and Astronomy
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Summary:Results of PIC simulation of the phase dynamics of counter-propagating overlimiting electron beams injected in opposite directions into various axially symmetric cavities are reviewed. Multiple examples of the complex dynamics of the beams are presented, in which virtual cathodes, phase-space holes, and squeezed state regions containing a dense charged electron plasma are formed. Space and time characteristics of the processes and the density, temperature, and lifetime of the electron plasma are estimated. Possible experiments and potential applications of counter-propagating overlimiting electron beams in various areas of science and technology are considered, including RF electronics, ultra-wideband electronics, particle accelerators, and electric discharges in gases.
ISSN:1063-7796
1531-8559
DOI:10.1134/S1063779622040049