Three-Dimensional Numerical Analysis of Ion Diamagnetic Effects on Interchange Mode in Heliotron Plasmas

Three-Dimensional Numerical Analysis of Ion Diamagnetic Effects on Interchange Mode in Heliotron Plasmas
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日射等离子体中离子反磁效应对交换模式的三维数值分析

DOI：
10.1585/pfr.10.3403018
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
S. Sakakibara
S. Sakakibara
中科院分区：
--
文献类型：
--
作者：
Timothée Nicolas;K. Ichiguchi;M. Sato;Y. Todo;Yasuhiro Suzuki;A. Ishizawa;S. Sakakibara

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利用三维磁流体动力学（MHD）程序研究了离子反磁流对大螺旋装置（LHD）等离子体中包含耗散的电阻交换模的影响。对交换模稳定性的贡献取决于理想增长率γI与包含电阻率和耗散的单一流体增长率γD之差。当γD接近γI时，离子的抗磁效应趋于稳定。在这种情况下，通过与无耗散的情况类似，可以用解析公式来近似稳定。当γD远离γI时，离子抗磁效应是不稳定的。
The influence of the ion diamagnetic flow on the resistive interchange mode including dissipation in the Large Helical Device (LHD) plasmas is investigated with three-dimensional (3D) magnetohydrodynamic (MHD) codes. The contribution on the interchange mode stability depends on the difference between the ideal growth rate γI and the single fluid growth rate including resistivity and dissipation γD. When γD is close to γI, the ion diamagnetic effects are stabilizing. In this case the stabilization can be approximated by an analytic formula by analogy with the case without dissipation. When γD is far from γI the ion diamagnetic effects are destabilizing.