HF SURFACE CYCLOTRON WAVES IN PLANAR WAVE-GUIDE STRUCTURES WITH NONUNIFORM PLASMA FILLING

The effects of dispersion of slow electromagnetic surface waves propag ating: across an external magnetic field in planar metallic waveguides with dielectric coating and. non-uniform plasma filling on the harmon ics of the electron cyclotron frequency are studied. The theoretical i nvestigation of the surface modes is carried out using a kinetic descr iption for the plasma particles and a mirror-reflection model for the interaction between particles and plasma boundary. The effect of the t ransverse plasma density inhomogeneity on the electron surface cyclotr on-wave spectrum is investigated.