On Steepest Descent Evaluation of an Integral Describing Transient Wave Propagation in Anisotropic Plasmas


  • Kenneth C. Chen,

  • Jui Lin Yen


In this paper, some properties of the steepest descent path of the integral describing transient plane wave propagation in anisotropic cold plasmas are determined. The relationship of the steepest descent method to the possible arrival of evanescent waves is illustrated by a numerical example. Also, it is shown through error estimates that the result obtained by the steepest descent method is valid for finite z and large t.