Dielectric Cherenkov maser with a magnetically confined plasma column in adielectric lined slow-wave waveguide

The effect of the strong external magnetic field is studied on the dielectr ic Cherenkov maser, which is included with an axial thin annular relativist ic electron beam and a plasma column in a dielectric lined slow-wave wavegu ide. 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, discussed, and compared in the pre sence and absence of external magnetic field. (C) 2000 American Institute o f Physics. [S1070-664X(00)02806-8].