Azimuthal surface waves on plasma-metal interface in inhomogeneous toroidal magnetic field

Propagation of unusually polarized electromagnetic surface waves across the circular axis of the metallic ring, placed in the magnetoactive plasma, is studied within the frames of the perturbation theory. The amplitude of the main harmonics of these waves is determined with the accuracy up to small summands of the second order. The amplitudes of the first satellite harmonics are determined with an account of the summands of the forst order insignificant amount. It is shown that correction to the eigenfrequency, conditioned by the nonuniformity of the constant toroidal magnetic field, constitutes the value of the second order insignificant amount