Azimuthal surface waves at the plasma-metal boundary in a nonuniform toroidal magnetic field |
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Authors: | I. A. Girka |
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Affiliation: | (1) Karazin National University, pl. Svobody 4, Kharkov, 61077, Ukraine |
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Abstract: | The propagation of electromagnetic surface waves with extraordinary polarization across the circular axis of a metal ring in a magnetized plasma is studied using perturbation theory. The amplitude of the fundamental mode of these waves is determined to within second-order terms, and the amplitudes of the nearest satellite modes are found correct to first-order terms. The correction to the eigenfrequency that comes from the nonuniformity of a constant toroidal magnetic field is shown be a second-order quantity. |
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