Continuum resonance induced electromagnetic torque by a rotating plasma response to static resonant magnetic perturbation field
Continuum resonance induced electromagnetic torque by a rotating plasma response to static resonant magnetic perturbation field
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DOI：
10.1063/1.4759205
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发表时间：
2012-10
影响因子：
2.2
通讯作者：
Yueqiang Liu;J. Connor;S. Cowley;C. Ham;R. Hastie;T. Hender
中科院分区：
文献类型：
--
作者：
Yueqiang Liu;J. Connor;S. Cowley;C. Ham;R. Hastie;T. Hender
进行了数值研究，基于一个简单的环形托卡马克平衡，以证明电磁转矩密度的径向重新分布，作为一个旋转的电阻等离子体（线性）响应静态共振磁扰动场的结果。计算的电磁转矩峰值在几个径向位置，即使在一个单一的理性表面的存在下，由于共振之间的旋转响应，在等离子体帧，和阿尔文和声连续波。当等离子体电阻率较大时，这些峰趋于合并在一起以形成相当全局的扭矩分布。即使在理想等离子体的极限下，连续共振引起的净电磁转矩仍然是有限的。
A numerical study is carried out, based on a simple toroidal tokamak equilibrium, to demonstrate the radial re-distribution of the electromagnetic torque density, as a result of a rotating resistive plasma (linear) response to a static resonant magnetic perturbation field. The computed electromagnetic torque peaks at several radial locations even in the presence of a single rational surface, due to resonances between the rotating response, in the plasma frame, and both Alfven and sound continuum waves. These peaks tend to merge together to form a rather global torque distribution, when the plasma resistivity is large. The continuum resonance induced net electromagnetic torque remains finite even in the limit of an ideal plasma.