Effect of longitudinal space-charge waves of a helical relativistic electron beam on the cyclotron maser instability

Author

Chen, C. ; Danly, B.G. ; Shvets, G. ; Wurtele, J.S.

Author_Institution

Plasma Fusion Center, MIT, Cambridge, MA, USA

Volume

20

Issue

3

fYear

1992

fDate

6/1/1992 12:00:00 AM

Firstpage

149

Lastpage

154

Abstract

The influence of the longitudinal space-charge waves of a coherently gyrophased helical relativistic electron beam on the cyclotron maser instability is investigated in a cylindrical waveguide configuration using a three-dimensional kinetic theory. A dispersion relation that includes waveguide effects is derived. The stability properties of the cyclotron maser interaction are examined in detail. It is shown that, in general, the effects of space-charge waves on a coherently gyrophased beam are suppressed in a waveguide geometry, in comparison with an ideal one-dimensional cyclotron maser with similar beam parameters

Keywords

dispersion relations; gyrotrons; kinetic theory; masers; relativistic electron beam tubes; space charge; stability; waveguides; cyclotron maser instability; cylindrical waveguide configuration; dispersion relation; helical relativistic electron beam; longitudinal space-charge waves; stability properties; three-dimensional kinetic theory; Cyclotrons; Dispersion; Electromagnetic scattering; Electromagnetic waveguides; Electron beams; Kinetic theory; Magnetic fields; Masers; Stability; Waveguide theory;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.142814

Filename

142814