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聚变等离子体中存在负磁剪切的情况下,研究发现在α(α=-q2Rdβ/dr,q是安全因子,β是等离子体压力与磁压力之比,R和r分别代表托卡马克的大半径和小半径)引起的第二个势井里面存在αTAEs(α-induced Alfvén eigenmodes)。这些模式是一种很危险的本征模,容易被激发从而破坏聚变等离子体的稳定状态。对该本征模的研究,为该领域的研究提供了一些参考。
In the case of negative-magnetic shear in fusion plasma, it is found that α (α = -q2Rdβ / dr, q is a safety factor, β is the ratio of plasma pressure to magnetic pressure, and R and r represent tokamak Large-radius and small-radius) in the second potential well there is αTAEs (α-induced Alfvén eigenmodes). These modes are a very dangerous eigenmode that can be easily excited to destroy the stable state of the fusion plasma. The study of this eigenmode provides some references for the research in this field.