Surface Waves in the paritally ionized solar plasma slab

TL;DR

This paper investigates how surface waves propagate in partially ionized, magnetized solar plasma slabs, highlighting the effects of non-ideal MHD phenomena like Hall and Pedersen diffusion on wave behavior and damping.

Contribution

It provides a detailed analysis of surface wave characteristics in partially ionized plasma slabs, incorporating non-ideal MHD effects, which was not extensively explored before.

Findings

Wave propagation depends on fractional ionization.

Hall diffusion influences sausage and kink wave behavior.

Waves experience damping over a few minutes with combined Hall and Pedersen diffusion.

Abstract

The properties of surface waves in the partially ionized, incompressible magnetized plasma slab are investigated in the present work. The waves are affected by the non ideal MHD effects which causes the finite drift of the magnetic field in the medium. When the finite drift of the magnetic field is ignored, the characteristics of the wave propagation in the partially ionized plasma fluid is similar to the ideal MHD except now the propagation properties depend on the fractional ionization of the medium. In the presence of Hall diffusion, the propagation of the sausage and kink surface waves depends on the level of fractional ionization of the medium. When both the Hall and Pedersen diffusion are present in the medium, the waves undergoes damping. For typical solar parameters, waves may damp over few minutes.