Nonlocal Electromagnetic Drift Instabilities in Current Sheet Equilibrium

Details Nonlocal Electromagnetic Drift Instabilities in Current Sheet Equilibrium Nonlocal Electromagnetic Drift Instabilities in Current Sheet Equilibrium

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm42c..08z&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM42C-08

Physics

Plasma Physics

2744 Magnetotail, 2764 Plasma Sheet, 2772 Plasma Waves And Instabilities, 2788 Storms And Substorms

Scientific paper

The identification of the onset mechanism for magnetic reconnection in collisionless plasmas in general, and substorm expansion in specific, is one of the outstanding problems in (space) plasma physics. Traditional approach has been based upon collisionless tearing instability. However, some recent developments provide evidence suggesting that the reconnection onset might be highly relevant to the generation of anomalous resistivity by drift instabilities. In this paper, drift instabilities in one-dimensional current sheet configuration are investigated. Nonlocal two-fluid stability analysis is formulated, and a class of unstable modes with multiple eigenstates, similar to that of the familiar quantum mechanical potential-well problem, are identified by numerical means. Finite-beta and electromagnetic effects on these modes are also discussed.

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