Dielectric Cherenkov maser with a magnetically confined plasma column in a dielectric rod slow-wave waveguide

Summary form only given. Dielectric Cherenkov maser with a plasma column, an axial dielectric rod and a thin annular relativistic electron beam (TAREB) is studied in the presence of external magnetic field. The dispersion equations of the beam-wave interaction are derived. The growth rates of the wave are obtained, and the effects of the accelerating voltage, beam current and the background plasma density on the growth rate of the wave are numerically calculated and discussed. Also results are numerically compared with pervious work. We concluded that, by placing a dielectric rod in the axes of waveguide, the growth rate increases.