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 Alfven 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 E1⊥ and for Alfven waves because both the ion transverse collision current and the electron longitudinal collision current are connected with E1z at the angular propagation of perturbations relative to the background magnetic field.
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