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Larmor radius effects on the instability of a stratified partially-ionized plasma in the presence of Hall currents and magnetic resistivity

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Abstract

Instability of a stratified layer of a partially-ionized plasma has been investigated in the simultaneous presence of the effects of Hall currents, magnetic resistivity, finite Larmor radius (FLR), and viscosity. The ambient magnetic field is assumed to be uniform and acting along the vertical direction. The solution is shown to be characterized by a variational principle, based on it the solution has been obtained for a plasma in which the density is stratified exponentially along the vertical. It is found that the viscosity, friction with neutrals, and FLR have all stabilizing influence on the growth rate of the unstable mode of disturbance. Magnetic resistivity and Hall currents are, however, found to have a destabilizing influence.

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Authors and Affiliations

  1. Department of Mathematics and Statistics, University of Jodhpur, Jodphur, India

    Vijay Mehta & P. K. Bhatia

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  1. Vijay Mehta
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  2. P. K. Bhatia
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Mehta, V., Bhatia, P.K. Larmor radius effects on the instability of a stratified partially-ionized plasma in the presence of Hall currents and magnetic resistivity. Astrophys Space Sci 148, 207–219 (1988). https://doi.org/10.1007/BF00645960

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  • DOI: https://doi.org/10.1007/BF00645960

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