Simulation of Plasma Instabilities for Current Disruption in the Magnetotail

Details Simulation of Plasma Instabilities for Current Disruption in the Magnetotail Simulation of Plasma Instabilities for Current Disruption in the Magnetotail

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm42c..07l&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM42C-07

Physics

2744 Magnetotail, 2764 Plasma Sheet

Scientific paper

The cross-field current instability (CCI) has been proposed as a potential candidate for current disruption and substorm expansion onset. In this paper, we use the particle simulation to investigate the excitation and nonlinear evolution of CCI. We have performed runs in both one-dimensional and two-dimensional situations. In the one-dimensional runs, we design the setup to simulate the Ion Weibel instability and the Modified-Two-Stream instability. The results are found to be consistent with theoretical predictions of growth rate and nonlinear evolution. In the two-dimensional run, the expected wave mode is found. Current filamentation and current sheet flapping are observed at the nonlinear stage.

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