PROPAGATION OF ELECTROMAGNETIC SURFACE-WA VES 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 arbit rary cross-section across a stationary magnetic field have been invest igated 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 t he chamber cross-section shape is of the second order in the small par ameter and the SW field distribution has been found from the Maxwell e quations with the accuracy up to the first order in it. SW in the n-se miconductor plasma, filling the waveguide of a square cross-section, h ave been investigated as an example.