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Nonlinear Evolution of Lower-Hybrid Drift Instability in Harris Current Sheet |
| GUO Fan1,2, LU Quan-Ming1,2, GUO Jun3, WANG Shui1 |
| 1School of Earth and Space Sciences, University of Science and Technology of China, Hefei 2300262Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 1000803School of Mathematics and Physics, Qingdao University of Science and Technology, Qingdao 266041 |
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| Cite this article: |
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GUO Fan, LU Quan-Ming, GUO Jun et al 2008 Chin. Phys. Lett. 25 2725-2728 |
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Abstract We perform 2.5-dimensional particle-in-cell simulations to investigate the nonlinear evolution of the lower hybrid drift instability (LHDI) in Harris current sheet. Due to the drift motion of electrons in the electric field of the excited low hybrid drift (LHD) waves, the electrons accumulate at the outer layer, and therefore there is net positive charge at the inner edge of the current sheet. This redistribution of charge can create an electrostatic field along the z direction, which then modifies the motions of the electrons along the y direction by E×B drift. This effect strongly changes the structure of the current sheet.
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94.30.Cp
94.20.Wf
52.65.Rr
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Received: 17 March 2008
Published: 26 June 2008
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