Condensed Matter Physics, 1995, No. 5, p. 192-202, English
DOI:10.5488/CMP.5.192
Title: Kinetic and hydrodynamic description of wave scattering and
transformation in plasmas
Authors: O.H. Sytenko
The paper discusses the difference between the kinetic and hydrodynamic
descriptions of nonlinear wave scattering and mixing in a plasma with an
external magnetic field. Solving the kinetic equation by the method of
moments makes it possible to substantiate the validity and to find
the applicability range of the fluid approach to the study of nonlinear plasma
processes. In the case of cold magnetoactive plasmas, the nonlinear kinetic
equation and the fluid-approximation equation are shown to yield the same
expression for the current that induces scattered waves. An additional
effect of electromagnetic wave scattering caused by the thermal dispersion
of fluctuations is considered. The current that induces scattered waves is anali
zed as a function of the scattered wave frequency