A Multicomponent Approach for Strongly Collisional Plasmas in the Solar Atmosphere

Abstract

A simple collisional three-component plasma model consisting of electrons, ions, and neutrals with arbitrary collision frequencies and dynamic time scales is considered. For the partially ionized plasma with a strong collisional coupling of neutrals with ions, magnetosonic and Alfvén waves modified by neutrals are obtained. It is shown that the magnetic diffusivity appears for magnetosonic waves as a result of the ion transverse collision current connected with the field E _1⊥ and for Alfvén waves because both the ion transverse collision current and the electron longitudinal collision current are connected with E _1z at the angular propagation of perturbations relative to the background magnetic field.

The model can be applied to different parts of the solar atmosphere and prominences.