部分球壳分布离子流激发的电磁不稳定性

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名

邮箱

手机号码

标题

留言内容

验证码

ION RING-BEAM INSTABILITY DRIVEN BY IONS WITH A PARTIAL SHELL DISTRIBUTION

1.
Certter for Space Science and Applied Research, The Chinese Academy of Sciences, Beijing 100080
2.
Institute for Physical Science and Technology, University of Maryland, USA

摘要: 在离子环束流和低频电磁波相互作用的过程中,离子环束流将演化成具有投掷角展宽的部分球壳速度分布离子流．其投掷角展宽随时间增大,低频右旋电磁不稳定性增长率峰值,总的说来也逐渐增大,并向高频短波方向移动．与此相反,低频左族电磁不稳定性增长率峰值,当投掷角展宽等于0时,大于右族不稳定性峰值。但随着投掷角展宽增加而迅速减少,低于右旋不稳定性增长率峰值,并向低频长波方向移动．
- 离子环束流 /
- 部分球壳分布 /
- 电磁不稳定性
Abstract: In the interaction between ion ring-beam and waves, the ring-beam velocitydistribution of the ions will evolve into a partial shell velocity distribution. Thespread of pitch angle of this partial shell increases with time, the peak value ofgrowth rate spectrum of the right hand ion beam instability decreases in generaland shifts to the region of higher frequency and larger wave number. The peakvalue of growth rate spectrum of the left hand instability driven by ions with aninitial ring distribution decreases rapidly with the increase of the spread of the pitchangle of the partial shell and shifts to the region of lower frequency and longer wavenumber.
- Ring-beam /
- Partial shell distribution /
- Electromagnetic instability