Discrete Alfvén eigenmodes in international thermonuclear experimental reactor operations with negative magnetic shear |
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引用本文: | 王军,胡双辉,代清平,姚龙宝.Discrete Alfvén eigenmodes in international thermonuclear experimental reactor operations with negative magnetic shear[J].海洋学报(英文版),2010,29(9). |
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作者姓名: | 王军 胡双辉 代清平 姚龙宝 |
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作者单位: | College of Science, Guizhou University, Guiyang 550025, China;College of Science, Guizhou University, Guiyang 550025, China;College of Science, Guizhou University, Guiyang 550025, China;College of Science, Guizhou University, Guiyang 550025, China |
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基金项目: | Project supported by the National Natural Science Foundation of China (Grant No. 10675037). |
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摘 要: | Discrete Alfvén eigenmodes in steady-state operation scenarios with negative magnetic shear in the international thermonuclear experimental reactor are investigated in this paper. These magnetohydrodynamic eigenmodes are trapped by the α -induced potential wells along the magnetic field line. Here α =-q2Rdβ/d r with q being the safety factor, β the ratio between plasma and magnetic pressures, and R the major radius, and r the minor radius. Due to negligible continuum damping via wave energy tunneling, these Alfvén eigenmodes could be readily destabilized by energetic particles.
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关 键 词: | Alfvén eigenmodes negative magnetic shear magnetohydrodynamic instability |
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