Title :
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
fDate :
6/1/1992 12:00:00 AM
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;
Journal_Title :
Plasma Science, IEEE Transactions on
