Finite temperature stabilization of the gradient drift instability in barium clouds

Details Finite temperature stabilization of the gradient drift instability in barium clouds Finite temperature stabilization of the gradient drift instability in barium clouds

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.5227d&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 90, June 1, 1985, p. 5227-5234. Research supported by the U.S. Defense Nu

Physics

13

Barium Ion Clouds, Magnetohydrodynamic Stability, Plasma Temperature, Thermal Stability, Magnetic Fields, Nonlinear Equations, Plasma Drift, Two Dimensional Flow

Scientific paper

A relatively simple analysis of the gradient drift instability in barium clouds which includes the effects of both finite temperature and finite parallel length is presented. It is found that short-wavelength modes are stabilized as the electrons redistribute parallel to the magnetic field and neutralize the charge imbalance set up by the instability. An analytical expression for the critical wave number for stabilization is given as well as numerical results. The application of these results to the structuring of barium clouds is discussed.

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