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Toroidal mode number transition of the edge localized modes in the KSTAR plasmas

机译：KSTAR等离子体中边缘局域模的环形模数过渡

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摘要

Rapid transitions of the toroidal mode number (n) have been often detected during the evolution of the edge localized modes (ELMs) in the inter-ELM-crash periods of the KSTAR tokamak plasmas. The mode number transitions accompany changes of the mode frequency (f_(mode)) (e.g. n changed from 8 to 5 while f_(mode) changed from ～32 to 9 kHz). The observed transition phenomena have been diverse including small and large increase (or decrease) in the mode number and multiple transitions during a single inter-ELM-crash period. Two classes of the mode transitions were identified: non-overlapping transition and overlapping transition. The former case is characterized by the absence of coherent filamentary structure during the transition and the latter case is characterized by co-existence of two coherent filamentary structures with different mode numbers. Each transition process typically lasts a few hundreds to thousands of μs.
机译：在KSTAR托卡马克等离子体的ELM碰撞之间的边缘局域模（ELM）演变过程中，经常检测到环形模数（n）的快速转变。模式编号转换伴随着模式频率（f_（mode））的变化（例如n从8变为5，而f_（mode）从〜32 kHz变为9 kHz）。观察到的过渡现象是多种多样的，包括模式数量的小和大增加（或减小），以及在单个ELM碰撞期间内的多个过渡。确定了两类模式转换：非重叠转换和重叠转换。前一种情况的特征在于在过渡期间不存在相干的丝状结构，而后一种情况的特征在于两种具有不同模数的相干的丝状结构并存。每个过渡过程通常持续数百至数千微秒。

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  • 来源
    《Nuclear fusion》 |2015年第11期|113035.1-113035.6|共6页
  • 作者

    J.E. Lee; G.S. Yun; M. Kim; J. Lee; W. Lee; H.K. Park; C.W. Domier; N.C. Luhmann Jr; W.H. Ko;

  • 作者单位

    Pohang University of Science and Technology, Pohang 790-784, Korea;

    Pohang University of Science and Technology, Pohang 790-784, Korea;

    Ulsan National Institute of Science and Technology, Ulsan 689-798, Korea;

    Pohang University of Science and Technology, Pohang 790-784, Korea;

    Ulsan National Institute of Science and Technology, Ulsan 689-798, Korea;

    Ulsan National Institute of Science and Technology, Ulsan 689-798, Korea;

    University of California, Davis, CA 95616, USA;

    University of California, Davis, CA 95616, USA;

    National Fusion Research Institute, Daejeon 305-333, Korea;

  • 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
  • 关键词

    ELMs; ECEI; toroidal mode number; KSTAR; nonlinear interaction;

    机译：ELMs;ECEI;环形模式号;科士达;非线性相互作用;

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