Plasma surface impedance for coupling to the ion-cyclotron and ion-Bernstein waves

Analytic expressions for the surface impedance for coupling radiofrequency energy into a slab-plasma at the ion-cyclotron range of frequencies are obtained. For the fast-wave coupling, the modification due to finite nsub(y), corresponding to azimuthal variation in cylindrical geometry, is included. For the slow-wave coupling to the ion-Bernstein modes, the plasma surface impedance exhibits critical dependence upon the electron density and ion temperature at the plasma edge. (orig.)