Effect of longitudinal space-charge waves of a helical relativisticelectron beam on the cyclotron maser instability |
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| Authors: | Chen C Danly BG Shvets G Wurtele JS |
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| Institution: | Plasma Fusion Center, MIT, Cambridge, MA; |
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| 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 |
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