Tilt stabilization by cycling ions crossing magnetic separatrix in a field-reversed configuration
Tilt stabilization by cycling ions crossing magnetic separatrix in a field-reversed configuration
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通过在场反转配置中循环穿过磁分界的离子实现倾斜稳定
DOI：
10.1063/1.872524
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发表时间：
1997
影响因子：
2.2
通讯作者：
Tetsuya Sato
中科院分区：
文献类型：
--
作者：
K. Nishimura;R. Horiuchi;Tetsuya Sato
本文用三维粒子模拟方法研究了场反转位形中倾斜破裂的稳定性。倾斜不稳定性的增长率随磁分界线βsp处等离子体β值的增大而减小，而对于低βsp和中等动力学（2 μ s × 5）的等离子体，倾斜不稳定性的增长率受有限离子Larmor半径参数s和平衡电流分布D的空心度参数的影响较小。结果表明，随着βsp的增大，多次穿越分界线的离子数通量增大，离子的穿越运动通过扰动不稳定的倾斜运动，起到了倾斜稳定化的作用。
The stabilization of the tilt disruption in a field-reversed configuration is investigated by means of a three-dimensional particle simulation. The growth rate of tilting instability decreases as the plasma beta value at magnetic separatrix βsp increases, while it is slightly affected by the finite ion Larmor radius parameter s and the hollowness parameter of an equilibrium current profile D for low βsp and moderately kinetic (2⩽s⩽5) plasmas. It is found that the number flux of ions crossing the separatrix repeatedly increases with increasing βsp and the crossing motion of ions plays a role in leading to the tilt stabilization by disturbing the unstable tilting motion.