Waveguide modes of a warm drifting uniaxial electron plasma for large drift velocities

The dispersion relation for guided waves in a warm drifting uniaxial electron plasma is derived for the case of large drift velocities using relativistic transformations. The phase characteristics of the "fast," "slow," and "waveguide" waves are presented and compared with the results of the nonrelativistic treatment. Significant differences are noted for small values of the normalized empty guide cutoff frequency and large drift velocities.