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多离子空间等离子体中快磁声波与粒子的回旋共振特性

肖晖 周庆华

肖晖, 周庆华. 多离子空间等离子体中快磁声波与粒子的回旋共振特性[J]. 空间科学学报, 2018, 38(3): 332-341. doi: 10.11728/cjss2018.03.332
引用本文: 肖晖, 周庆华. 多离子空间等离子体中快磁声波与粒子的回旋共振特性[J]. 空间科学学报, 2018, 38(3): 332-341. doi: 10.11728/cjss2018.03.332
XIAO Hui, ZHOU Qinghua. Gyroresonance between Fast Magnetosonic Waves and Particles in a Multi-ion Space Plasma[J]. Journal of Space Science, 2018, 38(3): 332-341. doi: 10.11728/cjss2018.03.332
Citation: XIAO Hui, ZHOU Qinghua. Gyroresonance between Fast Magnetosonic Waves and Particles in a Multi-ion Space Plasma[J]. Journal of Space Science, 2018, 38(3): 332-341. doi: 10.11728/cjss2018.03.332

多离子空间等离子体中快磁声波与粒子的回旋共振特性

doi: 10.11728/cjss2018.03.332
基金项目: 

国家自然科学基金项目(41674166)和湖南省教育厅资助科研项目(16K003)共同资助

详细信息
    作者简介:

    周庆华,E-mail:Zhouqinghua@csust.edu.cn

  • 中图分类号: P353

Gyroresonance between Fast Magnetosonic Waves and Particles in a Multi-ion Space Plasma

  • 摘要: 快磁声波是空间等离子体中一种接近垂直传播的右旋极化电磁波,能够在等离子体层内外传播.快磁声波与带电粒子的回旋共振相互作用能够导致高能电子随机加速和投掷角扩散、能量质子投掷角扩散等,从而影响辐射带高能带电粒子的动态过程.分别基于完整的色散关系和高密度近似的色散关系,在不同空间等离子体条件下研究多离子空间等离子体中不同传播角的快磁声波色散曲线,并计算了快磁声波与H+,He+和O+离子的最小共振能量.结果表明,当传播角较小时,采用高密度近似与采用完整色散关系计算的离子最小共振能量没有太大差别.在中低密度中强磁场空间等离子体中,传播角≥ 88°时高密度近似色散关系会带来很大的误差,因此应利用完整色散关系计算最小共振能量.

     

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出版历程
  • 收稿日期:  2017-04-12
  • 修回日期:  2017-10-08
  • 刊出日期:  2018-05-15

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