束缚高能粒子对电阻壁模的影响。
Effect of trapped energetic particles on the resistive wall mode.
机构信息
Southwestern Institute of Physics, Chengdu, China.
出版信息
Phys Rev Lett. 2011 Jul 1;107(1):015001. doi: 10.1103/PhysRevLett.107.015001.
A stability analysis for the resistive wall mode is studied in the presence of trapped energetic particles (EPs). When the EPs' beta exceeds a critical value, a fishbonelike bursting mode (FLM) with an external kink eigenstructure can exist. This offers the first analytic interpretation of the experimental observations [Phys. Rev. Lett. 103, 045001 (2009)]. The mode-particle resonances for the FLM and the q=1 fishbone occur in different regimes of the precession frequency of EPs. In certain ranges of the plasma rotation speed and the EPs' beta, a mode conversion can occur between the resistive wall mode and FLM.
研究了存在捕获高能粒子（EPs）时电阻壁模的稳定性。当 EPs 的 β 超过临界值时，具有外部扭结本征结构的鱼骨状爆发模式（FLM）可以存在。这为实验观测提供了第一个解析解释[Phys. Rev. Lett. 103, 045001 (2009)]。FLM 和 q=1 鱼骨的模式-粒子共振发生在 EPs 进动频率的不同区域。在等离子体旋转速度和 EPs 的β的某些范围内，电阻壁模和 FLM 之间可以发生模式转换。
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