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

WANG Peiran LU Quanming WU Mingyu WANG Shui

WANG Peiran, LU Quanming, WU Mingyu, WANG Shui. Effect of Ion Dynamics on the Evolution of Electron Phase-space Holes[J]. 空间科学学报, 2013, 33(4): 413-417. doi: 10.11728/cjss2013.04.413
引用本文: WANG Peiran, LU Quanming, WU Mingyu, WANG Shui. Effect of Ion Dynamics on the Evolution of Electron Phase-space Holes[J]. 空间科学学报, 2013, 33(4): 413-417. doi: 10.11728/cjss2013.04.413
WANG Peiran, LU Quanming, WU Mingyu, WANG Shui. Effect of ion dynamics on the evolution of electron phase-space holes[J]. Journal of Space Science, 2013, 33(4): 413-417. doi: 10.11728/cjss2013.04.413
Citation: WANG Peiran, LU Quanming, WU Mingyu, WANG Shui. Effect of ion dynamics on the evolution of electron phase-space holes[J]. Journal of Space Science, 2013, 33(4): 413-417. doi: 10.11728/cjss2013.04.413

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

doi: 10.11728/cjss2013.04.413
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

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

More Information
    Corresponding author: LU Quanming,E-mail:qmluq.edu.cn
  • 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 (Ωe < ωpe, where Ωe and ωpe 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 (Ωe > ωpe), the electron hole is broken due to the lower hybrid waves, and its evolution is much faster.

     

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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

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