Physics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm52e05y&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SM52E-05
Physics
2744 Magnetotail, 2764 Plasma Sheet, 2772 Plasma Waves And Instabilities, 7835 Magnetic Reconnection
Scientific paper
The detailed physics of reconnection, particularly, the mechanism which breaks the frozen-in condition and the generation of anomalous resistivity, require an extensive study of the current sheet instabilities. For instance, in the recent Princeton magnetic reconnection experiment (MRX), it was revealed that reconnection process is intimately related to the generation of large-amplitude electrostatic and magnetic fluctuations, which are tentatively interpreted as lower-hybrid drift and drift-kink type turbulences [Carter et al., 2000]. In the MRX experiment, electrostatic lower-hybrid turbulence was first observed to be generated just before the reconnection took place, but during the reconnection, large-amplitude magnetic fluctuations were observed. However, the exact identification of these modes is not currently possible because of the lack of comprehensive understanding of current sheet stability properties. Simulations also present evidence for the importance of drift instabilities. Both 2D particle simulations of current sheet in the cross-field plane, or full 3D particle simulations [e.g., Horiuchi and Sato, 1999] have shown that current sheet is unstable to a variety of drift instabilities which propagate primarily along the direction of cross-field current flow. In this paper, a class of cross-field drift instabilities in a current sheet which may be highly relevant to MRX experiment are discussed.
Guzdar Parvez
Lui A. T.
Sharma Surjalal A.
Sitnov Mikhail I.
Yoon Peter H.
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