Effect of Ion Dynamics on the Evolution of Electron Phase-space Holes

WANG Peiran; LU Quanming; WU Mingyu; WANG Shui

doi:10.11728/cjss2013.04.413

Effect of Ion Dynamics on the Evolution of Electron Phase-space Holes

doi: 10.11728/cjss2013.04.413

CAS Key Laboratory of Basic Plasma Physics, Department of Geophysics and Planetary Science, University of Science and Technology of China, Hefei 230026

基金项目: Supported by the National Natural Science Foundation of China (41128004, 41274144, 41121003, 41174124)

详细信息

通讯作者:
LU Quanming,E-mail:qmluq.edu.cn

中图分类号: P352
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出版历程
- 收稿日期: 2012-06-01
- 修回日期: 2013-01-05
- 刊出日期: 2013-07-15

Effect of ion dynamics on the evolution of electron phase-space holes

CAS Key Laboratory of Basic Plasma Physics, Department of Geophysics and Planetary Science, University of Science and Technology of China, Hefei 230026

More Information

Corresponding author: LU Quanming,E-mail:qmluq.edu.cn

摘要

摘要: The evolution of two-dimensional (2D) electron phase-space holes (electron holes) has been previously investigated with electrostatic Particle-in-Cell (PIC) simulations, which neglect ion dynamics. The electron holes are found to be unstable to the transverse instability, and their evolution is determined by the combined action between the transverse instability and the stabilization by the background magnetic field. In this paper, the effect of ion dynamics on the evolution of an electron hole is studied. In weakly magnetized plasma (Ω_e < ω_pe, where Ω_e and ω_pe are electron gyrofrequency and plasma frequency, respectively), the electron hole is still unstable to the transverse instability. However, it evolves a little faster and is destroyed in a shorter time when ion dynamics is considered. In strongly magnetized plasma (Ω_e > ω_pe), the electron hole is broken due to the lower hybrid waves, and its evolution is much faster.
- Ion dynamics /
- Electron holes /
- Transverse instability /
- Magnetized plasma
Abstract: The evolution of two-dimensional (2D) electron phase-space holes (electron holes) has been previously investigated with electrostatic Particle-in-Cell (PIC) simulations, which neglect ion dynamics. The electron holes are found to be unstable to the transverse instability, and their evolution is determined by the combined action between the transverse instability and the stabilization by the background magnetic field. In this paper, the effect of ion dynamics on the evolution of an electron hole is studied. In weakly magnetized plasma (Ω_e < ω_pe, where Ω_e and ω_pe are electron gyrofrequency and plasma frequency, respectively), the electron hole is still unstable to the transverse instability. However, it evolves a little faster and is destroyed in a shorter time when ion dynamics is considered. In strongly magnetized plasma (Ω_e > ω_pe), the electron hole is broken due to the lower hybrid waves, and its evolution is much faster.
- Ion dynamics /
- Electron holes /
- Transverse instability /
- Magnetized plasma

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参考文献(16)

[1]	Matsumoto H, Kojima H, Miyatake T, Omura Y, OkadaM, Nagno I, Tsutsui M. Electrostatic solitary waves(ESW) in the magnetotail: BEN wave forms observed byGeotail[J]. Geophys. Res. Lett., 1994, 21(25):2915-2918
[2]	Ergun R E, Carlson C W, Mcfadden J P, Mozer F S,Muschietti L. Debye-Scale plasma structures associatedwith magnetic-field-aligned electric fields[J]. Phys. Rev.Lett., 1998, 81(4):826-829
[3]	Bale S D, Kellogg P J, Larson D E, Lin R P, Gpetz K,Lepping R P. Bipolar electrostatic structures in the shocktransition region: Evidence of electron phase holes[J].Geophys. Res. Lett., 1998, 25(15):2929-2932
[4]	Mangeney A, Salem C, Lacombe C, Bougeret J L, PercheC, Manning R, Kellogg P J, Goetz K, Monson S J,Bosqued JM. WIND observations of coherent electrostaticwaves in the solar wind[J]. Ann. Geophys., 1999, 17:307-320
[5]	Cattell C, Crumley J, Dombeck J, Wygant J, Mozer FS. Polar observations of solitary waves at Earth's magnetopause[J]. Geophys. Res. Lett., 2002, 29(5):1065-1068
[6]	Pickett J S, Chen L J, Kahler S W, Santolik O, GurnettD A, Tsurutani B T, Balogh A. Isolated electrostaticstructures observed throughout the cluster orbit[J]. Ann.Geophys., 2004, 22:2525-2523
[7]	Bernstein I B, Greene J M, Kruskal M D. Exact nonlinearplasma oscillations[J]. Phys. Rev., 1957, 108(3):546-550
[8]	Muschietti L, Ergun R E, Roth I, Carlson C W. Phasespaceelectron holes along magnetic field lines[J]. Geophys.Res. Lett., 1999, 26(8):1093-1096
[9]	Omura Y, Kojama H, Matsumoto H. Computer simulationof electrostatic solitary waves: A nonlinear model ofbroadband electrostatic noise[J]. Geophys. Res. Lett.,1994, 21(25):2923-2926
[10]	Lu Q M, Wang D Y, Wang S. Generation mechanismof electrostatic solitary waves in the Earth's auroralregion[J]. J. Geophys. Res., 2005, 110, A03223,doi: 10.1029/2004JA010739
[11]	Muschietti L, Roth I, Carlson C W, Ergun R E. Transverseinstability of magenetized electron holes[J]. Phys.Rev. Lett., 2000, 85(1):94-97
[12]	Lu Q M, Lembege B, Tao J B, Wang S. Perpendicularelectric field in two-dimensional electron phase-hole: A parameterstudy[J]. J. Geophys. Res., 2008, 113, A11219,doi: 10.1029/2008JA013693
[13]	Wu M Y, Lu Q M, Huang C, Wang S. Transverse instabilityand perpendicular electric field in two-dimensionalelectron phase-space holes[J]. J. Geophys. Res., 2010,115, A10245, doi: 10.1029/2009JA015235
[14]	Franz J R, Kintner P M, Seyler C E, Pickett J S, ScudderJ D. On the perpendicular scale of electron phase-spaceholes[J]. Geophys. Rev. Lett., 2000, 27(2):169-172
[15]	Miyake T, Omura Y, Matsumoto H. Electrostatic particlesimulation of solitary waves in the auroral region[J]. J.Geophys. Res., 2000, 105(A10):23 239-23 249
[16]	Wu M Y, Wu H, Lu Q M, Xue B S. Effects of perpendicularthermal velocities on the transverse instability inelectron phase space holes[J]. Chin. Phys. Lett., 2010,27(9), 095201