Magnetic-field effect on wave dispersion in a free semiconductor plasma slab

An investigation of wave propagation in a plasma slab bounded by dissimilar dielectric media has been made numerically in the magnetohydrodynamic appr oximation. It has been shown that four families of waves can propagate: pla sma, cyclotron, anisotropic and waveguide modes. It has been proved that si ngular waves propagate at the crossing points of the waves with a complex z one boundary. We have analysed the influence of the bounding dielectric med ia, the width of the waveguide and the magnetization of the plasma on the s pectrum of the waves. The distributions of the fields, the energy density a nd the Poynting's vector of different modes along the dispersion curves hav e been analysed. The passing of energy from dielectric to plasma with incre asing wavenumber has been shown.