Observation of parallel viscosity in a stellarator.
Observation of parallel viscosity in a stellarator.
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仿星器中平行粘度的观察。
DOI：
10.1103/physrevlett.67.58
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发表时间：
1991
影响因子：
8.6
通讯作者：
CHS group
中科院分区：
文献类型：
--
作者：
Ida;Yamada;Iguchi;Itoh;CHS group
在切向中性束注入的紧凑螺旋系统-扭转卫星装置中，观察到平行粘度对等离子体环面速度的阻尼。当磁场调制在轴附近较弱时，环面速度分布以垂直粘度为主。然而，当调制足够强时，平行粘度占主导地位，并与磁场调制的平方成比例地增加。黏度的绝对值与新古典预测值在3的范围内一致。
Damping of the plasma toroidal velocity owing to parallel viscosity is observed in the Compact Helical System-torsatron device with tangential neutral-beam injection. The toroidal velocity profile is dominated by perpendicular viscosity when the magnetic-field modulation is weak near the axis. However, parallel viscosity is found to be dominant when the modulation is strong enough, and to increase in proportion to the square of the modulation of the magnetic field. The absolute values of the viscosity agree with the neoclassical prediction within a factor of 3.