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

机译：旋转螺旋磁场对托卡马克边缘等离子体中湍流分形结构和输运的影响

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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 μs. 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.
机译：在托卡马克HYBTOK-II中研究了边缘湍流的分形结构和增强的湍流传输，其中旋转螺旋磁场（RHF）频率在5–30 kHz范围内变化。边缘波动具有非高斯统计量，其原因是时间间隔为40–100μs的间歇性爆发。 RHF频率的变化对边缘湍流和湍流的分形结构产生选择性影响，从而证明了对传输过程的选择性控制。 RHF对共振漂移波模式的延迟同步控制被认为是解释影响对RHF频率的依赖性的候选机制。

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  • 来源
    《Nuclear fusion》 |2004年第6期|p. S108-S117|共10页
  • 作者

    V. Budaev; Y. Kikuchi; Y. Uesugi; S. Takamura;

  • 作者单位

    Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan;

    Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan;

    Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan;

    Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 原子核物理学、高能物理学;
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