Quasilinear dynamics of ordinary mode electromagnetic cyclotron instability driven by the interaction of rotating electron beam with magnetized plasma

The quasilinear theory is employed to study the temporal evolution of the cyclotron instability near the ordinary mode in a magnetized plasma in the presence of the rotating electron beam. The positive gradient region of the initial distribution function is eroded by the diffusion process driven by...

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Bibliographic Details
Published inPlasma physics and controlled fusion Vol. 62; no. 11; pp. 115004 - 115009
Main Authors Abbasi Rostami, Sh, Khorashadizadeh, S M, Niknam, A R
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.11.2020
Subjects
beam-plasma interaction
plasma instability
plasma turbulence
quasilinear theory
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Summary:The quasilinear theory is employed to study the temporal evolution of the cyclotron instability near the ordinary mode in a magnetized plasma in the presence of the rotating electron beam. The positive gradient region of the initial distribution function is eroded by the diffusion process driven by the wave fields. It is found that the wave non-linear effects modify the electron distribution function by transferring resonance particles to the valley between the plasma bulk and the bump on tail. This movement ultimately leads to flattening the distribution function in the interaction region, which is a saturation state.
Bibliography:PPCF-102893.R1
ISSN:0741-3335
1361-6587
DOI:10.1088/1361-6587/abb0f6