Tiect of rotating helical magnetic field on the turbulence fractal structure and transport in the tokamak edge plasma'

被引：29
|
作者：
Budaev, V [1 ]
Kikuchi, Y [1 ]
Uesugi, Y [1 ]
Takamura, S [1 ]
机构：
[1] Nagoya Univ, Grad Sch Engn, Dept Energy Engn & Sci, Nagoya, Aichi 4648603, Japan
来源：
NUCLEAR FUSION | 2004年 / 44卷 / 06期
关键词：
D O I：
10.1088/0029-5515/44/6/S11
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Fractal structure of the edge turbulence and enhanced turbulent transport have been studied in the tokamak HYBTOK-II with a variation of the rotating helical magnetic field (RHF) frequency in the range 5-30 kHz. Edge fluctuations have non-Gaussian statistics caused by intermittent bursts with a time scale of 40-100 mus. The variation in the RHF frequency has a selective effect on the fractal structure of edge turbulence and the turbulent flux, demonstrating a selective control of the transport process. A delayed synchronization control of resonant drift wave modes by the RHF is considered as a candidate mechanism to explain the dependence of the effect on the RHF frequency.
引用
收藏
页码：S108 / S117
页数：10
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