Relaxation of initial perturbation and Landau damping in an inhomogeneous plasma
Dikman S.M.
The relaxation of plasma oscillations in a weakly inhomogeneous anisotropic collisionless plasma is considered. The damping of the Langmuir waves is investigated in detail. The Landau-damping decrement increases exponentially with time, owing to the linear growth of the characteristic wave vector with time.