Finite Larmor radius and Hall effects on thermosolutal instability of a rotating plasma

Details Finite Larmor radius and Hall effects on thermosolutal instability of a rotating plasma Finite Larmor radius and Hall effects on thermosolutal instability of a rotating plasma

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.178..147s&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 178, no. 1, April 1991, p. 147-157.

Astronomy and Astrophysics

Astrophysics

Hall Effect, Larmor Radius, Plasma Equilibrium, Rotating Plasmas, Magnetohydrodynamic Stability, Thermal Plasmas

Scientific paper

Thermosolutal instability of a rotating plasma with finite Larmor radius and Hail effects is studied. When the instability sets in as stationary convection, the Hall currents and the stable solute gradient are found to have destabilizing and stabilizing effects, respectively. For the case of no rotation, finite Larmor radius effects are always stabilizing for x = (k2d2/ic2) greater than two and for x less than two they have a stabilizing or destabilizing influence depending on whether N( = v0/v) is greater than or less than its critical value Ncr. In the limit of vanishing Hall current, the stabilizing effect of Coriolis force is observed. The question of onset of instability as overstability is also discussed

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