Observation of plasma flow at the magnetic island in the Large Helical Device
Observation of plasma flow at the magnetic island in the Large Helical Device
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DOI：
10.1103/physrevlett.88.015002
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发表时间：
2002-01-07
影响因子：
8.6
通讯作者：
Komori, A
中科院分区：
文献类型：
--
作者：
Ida, K;Ohyabu, N;Komori, A
本文测量了大螺旋装置中由外部微扰线圈产生的n/m = 1/1磁岛上离子温度和等离子体流场的径向分布。由于静止磁岛内部的极向流消失，在磁岛的边界处观察到剪切极向流和剪切径向电场。当磁岛的宽度变大时，沿磁岛内部的磁通表面的流动沿着出现在O点周围，其方向减小磁岛边界处的极向流的剪切。
Radial profiles of ion temperature and plasma flow are measured at the n/m = 1/1 magnetic island produced by external perturbation coils in the Large Helical Device. The sheared poloidal flows and sheared radial electric field are observed at the boundaries of the magnetic island, because the poloidal flow vanishes inside the static magnetic island. When the width of the magnetic island becomes large, the flow along the magnetic flux surface inside the magnetic island appears around the O point in the direction which reduces the shear of the poloidal flow at the boundary of the magnetic island.