Vortices in non-uniform dusty plasmas

Details Vortices in non-uniform dusty plasmas Vortices in non-uniform dusty plasmas

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992p%26ss...40..647b&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 40, no. 5, May 1992, p. 647-654. Research supported by Alexander von Humboldt

Astronomy and Astrophysics

Astrophysics

26

Dust, Nonuniform Plasmas, Space Plasmas, Two Fluid Models, Vortices, Comet Tails, Earth Ionosphere, Planetary Rings, Velocity Distribution

Scientific paper

By means of a two fluid model, a set of nonlinear mode coupling equations is derived for weakly interacting LF electrostatic fluctuations that are driven by a sheared ion velocity flow in a nonuniform dusty plasma embedded in an external magnetic field. The linear instability is reexamined. Furthermore, dipolar vortices are shown to be possible stationary solutions of the nonlinear equations governing mode coupling of the ion velocity gradient fluctuations in dusty plasmas. The existence regions in parameter space for the dipolar vortex formation are presented. The relevance of this investigation to astrophysical and space plasmas is discussed.

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