Damping of electromagnetic waves in low-collision electron-ion plasma

Using previously developed methods of two-dimensional Laplace transform, we obtain the characteristic equations k(ω) for electromagnetic waves in low-collision fully ionized plasma in a plane geometry. We apply here a new technique, different from the one used in iteration procedure of taking into account the Coulomb collisions [1]. The kinematical waves are collisionally damped to the same extent as the electromagnetic waves. Despite the difference in appearance of the dispersion (poles) equation, the obtained decrements for fast and slow wave modes coincide with the results obtained if one neglects the terms of higher orders in V²_x/c², (V_x and C are electron and light velocities). We point out how one can determine mutually dependent boundary conditions, allowing us to eliminate simultaneously both the backward and kinematical waves for transverse as well as for longitudinal oscillations.