摘要
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.
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.
基金
Supported by the National Natural Science Foundation of China under Grant Nos 40674093 and 40725013, and the Knowledge Innovation Project of Chinese Academy of Sciences under Grant No KZCX3-SW-144.
