Emission by a relativistic beam at a magneto-Cerenkov resonance in a periodic waveguide

The experiments described were carried out to study the generation of microwave radiation in the interaction between an 0.7-MeV relativistic electron beam and a slow-wave system, in the form of a plasma-filled corrugated waveguide, in the presence of combinational resonance (i.e., simultaneous Cerenkov and cyclotron resonances). Radiation power and efficiency are shown to increase under conditions of combinational resonance.