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
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
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.
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.
[1] Wang S and Lee L C 1999 Magnetic Reconnection (Hefei: AnhuiEducation Press) (in Chinese) [2] Biskamp D 2000 Magnetic Reconnection in Plasmas (Cambridge:Cambridge University) [3] Baker D N, Pulkkinen T I, Angelopoulos V, Baumjohann W andMcPherron R L 1996 J. Geophys. Res. 101 12975 [4] Lui A T Y 1996 J. Geophys. Res. 101 13067 [5] Birn J, Drake J F, Shay M A, Rogers B N, Denton R E, Hesse M,Kuznetsova M, Ma Z W, Bhattacharjee, Otto A and Pritchett P L 2001 J.Geophys. Res. 106 3715 [6] Davidson R C, Gladd N T, Wu C S and Huba J D 1977 Phys.Fluids 20 301 [7] Huba J D, Drake J F and Gladd N T 1980 Phys. Fluids 23 552 [8] Shinohara I, Nagai T, Fujimoto M, Terasawa T, Mukai T, Tsuruda Kand Yamamoto T 1998 J. Geophys. Res. 103 20365 [9] Bale S D, Mozer F S and Phan T 2002 Geophys. Res. Lett. 29 33 [10] Carter T A, Ji H, Trintchouk F, Yamada M and Kulsrud R M 2002 Phys. Rev. Lett. 88 015001 [11] Daughton W 2003 Phys. Plasmas 10 3103 [12] Daughton W, Lapenta G and Ricci P 2004 Phys. Rev. Lett. 93105004 [13] Ricci P, Brackbill J U, Daughton W and Lapenta G 2005 Phys. Plasma 12 055901 [14] Scholer M, Sidorenko I, Jaroschek C H, Treumann R A and Zeiler A2003 Phys. Plasmas 10 3521 [15] Karimabadi H, Daughton W and Quest K B 2004 Geophys.Res. Lett. 31 L18801 [16] Fu X R, Lu Q M and Wang S 2006 Phys. Plasma 13 012309 [17] Lapenta G, Brackbill J U 2002 Phys. Plasma 9 1544
2008, Vol. 25 
