Finite Larmor-radius effects on Rayleigh-Taylor instability of a dusty magnetized plasma

Details Finite Larmor-radius effects on Rayleigh-Taylor instability of a dusty magnetized plasma Finite Larmor-radius effects on Rayleigh-Taylor instability of a dusty magnetized plasma

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ap%26ss.132...57s&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 132, no. 1, April 1987, p. 57-64.

Astronomy and Astrophysics

Astrophysics

2

Larmor Radius, Magnetohydrodynamic Stability, Plasma Density, Rayleigh Scattering, Taylor Instability, Linear Equations, Magnetic Field Configurations, Particle Motion, Perturbation Theory, Stratified Flow

Scientific paper

This paper discusses the Rayleigh-Taylor (RT) instability of an infinitely conducting medium having an exponential density distribution which includes the effects of finite ion Larmor-radius (FLR) corrections and suspended particles in the presence of a uniform horizontal magnetic field. It has been found that the criterion for the stable density stratification remains uninfluenced by the simultaneous inclusion of the FLR corrections and suspended particles. The stability of the medium has been proved for the case of stable stratification when the FLR corrections are not considered in the analysis. The growth rate of unstable RT modes with increasing relaxation frequency of the suspended particles is evaluated analytically. It has been shown that the presence of suspended particles in the medium suppresses the growth rate of the unstable RT modes, thereby implying a stabilizing influence of the particles on the considered configuration.

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