H. Tsukuda et al., Instabilities driven by an intense beam in a plasma-filled dielectric-lined waveguide immersed in a finite axial magnetic field, INT J INFRA, 22(8), 2001, pp. 1147-1162
Citations number
16
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES
A linear analysis is described on instabilities driven by an intense relati
vistic electron beam in an infinitely long, plasma-filled, and dielectric-l
ined circular waveguide immersed in a finite strength axial magnetic field.
A dispersion equation is derived from the cold fluid theory and solved num
erically. Beam-plasma instabilities due to interaction between beam modes a
nd the Trivelpiece-Gould modes appear as well as the Cherenkov and the cycl
otron Cherenkov instabilities. Parametric researches are carried out varyin
g magnetic field strength, plasma density, and dielectric constant. Effects
of a finite magnetic field and plasma filling are discussed in connection
with the possibilities of using this system as a microwave radiation source
.