TITLE

Investigation of the chaotic dynamics of an electron beam with a virtual cathode in an external magnetic field

AUTHOR(S)
Egorov, E.; Hramov, A.
PUB. DATE
August 2006
SOURCE
Plasma Physics Reports;Aug2006, Vol. 32 Issue 8, p683
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The effect of the strength of the focusing magnetic field on chaotic dynamic processes occurring in an electron beam with a virtual cathode, as well as on the processes whereby the structures form in the beam and interact with each other, is studied by means of two-dimensional numerical simulations based on solving a self-consistent set of Vlasov-Maxwell equations. It is shown that, as the focusing magnetic field is decreased, the dynamics of an electron beam with a virtual cathode becomes more complicated due to the formation and interaction of spatiotemporal longitudinal and transverse structures in the interaction region of a vircator. The optimum efficiency of the interaction of an electron beam with the electromagnetic field of the vircator is achieved at a comparatively weak external magnetic field and is determined by the fundamentally two-dimensional nature of the motion of the beam electrons near the virtual cathode.
ACCESSION #
23018105

 

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