Original scientific paper
Stabilization of a dynamic mode of a weakly ionized plasma by large electron drifts
B. Milić
; Institute of Physics, ·seograd
Abstract
Three slow and short-wave aperiodic modes with phase velocities and wavelengths smaller than electron thermal velocity and mean-free-path, respectively, and with the electric vector of the wave lying in the (k->, E0->)-plane are considered in a homogeneous and infinite weakly ionized and non-magnetized plasrna placed in a strong external electric d. c. field E0->• Waves propagating at right.angles to E0 are studied. Modal spectra are determined from kinetic theory using an extended. Margenau-Davydov electron steady-state distribution function. It is shown that under broad assumptions regarding e-n elastic scattering, two finite critical values of electron drift can be specified for one of these modes. If electron drifts lie in this critical range, increasing amplitude waves corresponding to this mode appear; on the contrary, large electron drifts have a stabilizing effect.
Keywords
weakly ionized plasma; ionized plasma
Hrčak ID:
317846
URI
Publication date:
3.4.1968.
Visits: 0 *