Distorted magnetic island formation during slowing down to mode locking in helical plasmas
Distorted magnetic island formation during slowing down to mode locking in helical plasmas
复制标题
螺旋等离子体减速至锁模期间扭曲的磁岛形成
DOI：
10.1088/1741-4326/aa6d26
复制
发表时间：
2017
期刊：
影响因子：
3.3
通讯作者：
and the LHD Experiment Group
中科院分区：
文献类型：
--
作者：
T. Tokuzawa;Y. Takemura;K.Y. Watanabe;S. Sakakibara;Y. Narushima;H. Tsuchiya;Y. Nagayama;S. Inagaki;K. Ida;M. Yoshinuma;K. Tanaka;Y. Suzuki;I. Yamada;and the LHD Experiment Group
我们报道了在螺旋等离子体中以类锁定模式形成的磁岛的发现。将新的分析和观测技术应用于LHD实验中的ECS信号和极向流，结果表明：(1)存在磁岛结构。这表明阻性交换模式可以诱导处于锁定相的旋转磁岛。(Ii)磁岛的旋转速度在空间上是不均匀的。在锁模阶段，岛的环状结构发生变化，直至锁模，变形量增大。这些结果对于理解锁模不稳定性对禁闭的影响是很有意义的。
We report the discovery of the magnetic island formed in the locked-like mode in helical plasma. New analysis and observation techniques applied to the ECE signal and poloidal flow in LHD experiments show the following results.(i) The magnetic island structure is present. This indicates that the resistive interchange mode can induce the rotating magnetic island in the locking phase.(ii) The rotation speed of the island is not uniform in space. The toroidal structure of the island changes in the locking-phase, and the deformation increases till the mode is locked. These results are quite meaningful to understand the locked mode instability affecting the confinement.