Global Instability Structure in a Linear Beam Confinement System

We investigate instabilities of electron beam particles confined in a cylindrical chamber using a 3-dimensional full particle simulation. The global structure of electron beam plasma changes within 1 µs, and deforms to those formed by the instabilities such and the sausage and kink instabilities. Th...

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Bibliographic Details
Published in:Plasma and Fusion Research 2019/01/24, Vol.14, pp.2401018-2401018
Main Authors: SEKIGUCHI, Kojiro, URANO, Takahiro, IWATA, Shuya, SAKAI, Gaku, MATSUMOTO, Ryo, TAKAHASHI, Toshiki
Format: Article
Language:English
Subjects:
azimuthal mode
Cylindrical chambers
Deformation mechanisms
Electron beams
Electron density
Electrons
Fourier analysis
full particle simulation
Plasma
plasma oscillation
Plasma oscillations
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Summary:We investigate instabilities of electron beam particles confined in a cylindrical chamber using a 3-dimensional full particle simulation. The global structure of electron beam plasma changes within 1 µs, and deforms to those formed by the instabilities such and the sausage and kink instabilities. The azimuthal mode of the electron density on the midplane of beam plasma is analyzed and the amplitude of mode number of 1 or more increases at 0.2 µs. It was also found that the temporal change of the electron density on the geometric axis is caused by the plasma oscillation.
ISSN:1880-6821
1880-6821
DOI:10.1585/pfr.14.2401018