Filamentation instability of self-focused hollow electron beam

Author

Uhm, Han S. ; Choi, Eun H.

Author_Institution

Dept. of Molecular Sci. & Technol., Ajou Univ., Suwon, South Korea

Volume

2

fYear

2003

fDate

15-18 June 2003

Firstpage

1010

Abstract

A hollow electron beam has a finite beam thickness even for the beam electron distribution function in which all the electrons have the same canonical angular momentum. The thickness of the hollow electron beam with zero canonical angular momentum spread originates from the betatron oscillation amplitude of beam electrons. In this context, we investigate influence of the betatron oscillation on stability properties of the filamentation instability in a self-pinched hollow electron beam. It is shown that growth rate of the high azimuthal mode perturbations in body wave is substantially reduced by the amplitude of the betatron oscillation.

Keywords

angular momentum; betatrons; electron beam focusing; electron beams; filamentation instability; plasma oscillations; plasma-beam interactions; azimuthal mode perturbations; beam electron distribution function; betatron oscillation amplitude; canonical angular momentum; filamentation instability; finite beam thickness; self-focused hollow electron beam; Current density; Distribution functions; Electron beams; Equations; Particle beams; Plasma density; Plasma properties; Plasma stability; Space charge; Stability analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Pulsed Power Conference, 2003. Digest of Technical Papers. PPC-2003. 14th IEEE International

Conference_Location

Dallas, TX, USA

Print_ISBN

0-7803-7915-2

Type

conf

DOI

10.1109/PPC.2003.1277983

Filename

1277983