Eigen electromagnetic waves of a coaxial waveguiding structure filled by a non‐uniform dissipative plasma with azimuthal magnetic field

Abstract

This paper studies the propagation and spatial attenuation of high-frequency eigen-symmetric and dipolar electromagnetic waves along a coaxial plasma-metal waveguiding structure that contains a slightly axial and strong radial non-uniform cylindrical plasma slab in an external azimuthal non-uniform magnetic field. The influence of such parameters as the effective electron collision frequency, the direct current value producing the external azimuthal magnetic field, parameters that characterize plasma density radial profile, and waveguide geometric parameters on the dispersion, spatial attenuation, and radial field structure of the waves is considered. The regions of waveguiding structure parameters where the electromagnetic wave properties can be effectively controlled are studied and analyzed. KEYWORDSazimuthal magnetic field, coaxial waveguide, electromagnetic wave, plasma non-uniformity 1