Stability of solitary waves in a magnetized non-thermal plasma

摘要

A theoretical investigation is made of the stability of electrostatic waves in a magnetized non-thermal plasma. The Zakharov-Kuznetsov equation (or Korteweg-de Vriea equation in three dimensions) for these solitary waves in this plasma system ia derived, and their three-dimensional stability ia studied by the small-fc (long-wavelength plane-wave) perturbation expansion method. The instability criterion and its growth rate depending on the magnetic field and the propagation directions of the solitary wave and its perturbation mode are diacuaaed.