Stabilization of the Resistive Wall Mode Instability by Trapped Energetic Particles
Stabilization of the Resistive Wall Mode Instability by Trapped Energetic Particles
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DOI：
10.1063/1.3569854
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发表时间：
2011-03
影响因子：
2.2
通讯作者：
G. Hao;Yueqiang Liu;A. K. Wang;H. B. Jiang;G. Lu;H. D. He;X. Qiu
中科院分区：
文献类型：
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作者：
G. Hao;Yueqiang Liu;A. K. Wang;H. B. Jiang;G. Lu;H. D. He;X. Qiu
提出了一个研究俘获高能粒子（EP）对电阻壁模（RWM）不稳定性影响的理论模型。结果表明，由于模式与被捕获的EP的磁旋进漂移运动之间的共振相互作用，被捕获的EP对RWM具有显著的稳定作用。实验结果还表明，电脉冲的捕获效果与壁面位置有关。此外，当考虑等离子体旋转时，稳定效应变得更强。对于足够快的等离子体旋转，捕获的EP可以导致RWM的完全稳定。此外，捕获的EP可以诱导有限的真实的频率的RWM等离子体旋转的情况下。
A theoretical model for investigating the effect of the trapped energetic particles (EPs) on the resistive wall mode (RWM) instability is proposed. The results demonstrate that the trapped EPs have a dramatic stabilizing effect on the RWM because of resonant interaction between the mode and the magnetic precession drift motion of the trapped EPs. The results also show that the effect of the trapped EPs depends on the wall position. In addition, the stabilizing effect becomes stronger when the plasma rotation is taken into account. For sufficiently fast plasma rotation, the trapped EPs can lead to the complete stabilization of the RWM. Furthermore, the trapped EPs can induce a finite real frequency of the RWM in the absence of plasma rotation.