PROPAGATION OF ELECTROMAGNETIC SURFACE-WAVES IN GYROTROPIC PLASMA BOUNDED BY THE METALLIC WAVE-GUIDE OF AN ARBITRARY CROSS-SECTION

The spreading of extraordinary electromagnetic surface waves (SW) in a cold collisionless plasma bounded by the metallic chamber of an arbitrary cross-section across a stationary magnetic field have been investigated by means of the perturbation theory. Their properties have been compared with those of SW in a planar plasma layer and in a circular plasma cylinder. The SW frequency shift caused by non-circularity of the chamber cross-section shape is of the second order in the small parameter and the SW field distribution has been found from the Maxwell equations with the accuracy up to the first order in it. SW in the n-semiconductor plasma, filling the waveguide of a square cross-section, have been investigated as an example.