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首页> 外文期刊>Plasma physics and controlled fusion >Intrinsic rotation due to MHD activity in a tokamak with a resistive wall
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Intrinsic rotation due to MHD activity in a tokamak with a resistive wall

机译：带有电阻壁的托卡马克中由于MHD活性引起的内在旋转

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摘要

MHD activity in a tokamak, in the form of waves and instabilities, generally has a preferred direction for propagation in a two-fluid plasma. When the radial component of magnetic field associated with this activity interacts with a resistive wall, momentum or angular momentum will be given to the wall. The equal and opposite reaction will be on the plasma, in particular, for ideal and resistive modes, at the singular or resonant surfaces for the various modes. In this case the torque exerted is electromagnetic. This is in contrast to other mechanisms for intrinsic or spontaneous rotation which may arise at the plasma boundary. The resistive wall is considered generally, and the thin and thick wall limits found, the latter being relevant to ITER parameters. Remarkably small radial perturbing fields of order 0.1 G could produce a torque comparable in effect to the apparent anomalous toroidal viscosity.
机译：托卡马克中的MHD活动以波和不稳定性的形式，通常具有在双流体等离子体中传播的首选方向。当与此活动相关的磁场的径向分量与电阻壁相互作用时，将向该壁施加动量或角动量。相等和相反的反应将在等离子体上发生，特别是对于理想模式和电阻模式，在各种模式的奇异或共振表面上。在这种情况下，施加的扭矩是电磁的。这与在等离子体边界处可能发生的固有或自发旋转的其他机制相反。通常考虑电阻壁，并找到薄壁和厚壁极限，后者与ITER参数有关。 0.1 G左右的很小的径向扰动场可以产生与表观异常环形粘度相当的转矩。

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