Model Kinetic Description in Plasma

Abstract

A consistent derivation of the model linearized collision operator for a multicomponent plasmas in the approximation of local (not full) equilibrium is presented. In these results an ambiguity in the choice of coefficients is eliminated, in contrast to the BGK type models. Furthermore, the linearized collision operator constructed by us describes correctly the Spitzer values of viscosity and thermal conductivity. A technique to reconstruct the model linearized operator is proposed. It is shown that the model collision integral in the local equilibrium approximation does not contain a complicated exponential which is common for the BGK type integral.