| Stability of Tokamak Equilibrium with Internal Transport Barrier against High-n MHD Ballooning Mode |
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| 引用本文： | 石秉仁 曲文孝 董家齐. Stability of Tokamak Equilibrium with Internal Transport Barrier against High-n MHD Ballooning Mode[J]. 中国物理快报, 2006, 23(2): 407-409 |
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| 作者姓名： | 石秉仁 曲文孝 董家齐 |
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| 作者单位： | Southwestern Institute of Physics, PO Box 432, Chengdu 610041 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10135020 and 10375018. |
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| 摘 要： | ![]()
A new eigen-mode equation for the tokamak high-n （the toroidal mode number） ideal magnetohydrodynamic （MHD） ballooning mode in tokamak plasmas is derived to include the toroidal effects that are significant for stability of configurations with internal transport barriers （ITBs）, Fot tokamak equilibria of shift circular flux surfaces, these toroidal effects basically are the finite inverse aspect ratio and the Shafranov shift. The former yields the averaged favorable curvature stabilization while the latter further strengthens this effect, leading to a low shear stable channel connecting the first and second stability regions, and to the shrinkage of unstable region in the （8,α） diagram. The dependence of the critical shear, below which the plasma is stable, on these effects is given. These results are important for understanding the ITB physics to some regards.
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| 关 键 词： | 托卡马克平衡 内输运障碍 转换循环 环形效应 磁场流体学 |
| 收稿时间： | 2005-10-18 |
| 修稿时间： | 2005-10-18 |
Stability of Tokamak Equilibrium with Internal Transport Barrier against High-n MHD Ballooning Mode |
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| SHI Bing-Ren, QU Wen-Xiao, DONG Jia-Qi. Stability of Tokamak Equilibrium with Internal Transport Barrier against High-n MHD Ballooning Mode[J]. Chinese Physics Letters, 2006, 23(2): 407-409 |
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| Authors: | SHI Bing-Ren QU Wen-Xiao DONG Jia-Qi |
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| Abstract: | ![]()
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