中国物理B ›› 2010, Vol. 19 ›› Issue (9): 95202-095202.doi: 10.1088/1674-1056/19/9/095202
王军, 胡双辉, 代清平, 姚龙宝
Wang Jun(王军)†, Hu Shuang-Hui(胡双辉)‡, Dai Qing-Ping(代清平)a), and Yao Long-Bao(姚龙宝)
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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