Temporal-spatial structures of plasmas flows and turbulence around tearing mode islands in the edge tokamak plasmas

K. J. Zhao, Y. Nagashima, F. M. Li, Yuejiang Shi, P. H. Diamond, J. Q. Dong, K. Itoh, S. I. Itoh, G. Zhuang, H. Liu, Z. P. Chen, J. Cheng, L. Nie, Y. H. Ding, Q. M. Hu, Z. Y. Chen, B. Rao, Z. F. Cheng, L. Gao, X. Q. ZhangZ. J. Yang, N. C. Wang, L. Wang, W. Jin, W. Yan, J. Q. Xu, Y. F. Wu, L. W. Yan, A. Fujisawa, S. Inagaki, Y. Kosuga, M. Sasaki

研究成果: Contribution to journalArticle査読

8 被引用数 (Scopus)

抄録

The temporal-spatial structures of plasma flows and turbulence around tearing mode islands are presented. The experiments were performed using Langmuir probe arrays in the edge plasmas of J-TEXT tokamak. The correlation analyses clearly show that the flows have similar structures of m/n = 3/1 as the magnetic island does (m and n are the poloidal and toroidal mode numbers, respectively). The sign of the potential fluctuations for the flows inverses and the powers significantly reduce at q = 3 surface. Approaching to the last closed flux surface for the magnetic islands, the radially elongated flow structure forms. The flows are concentrated near separatrix and show quadrupole structures. The turbulence is concentrated near X-point and partly trapped inside the magnetic islands.

本文言語英語
論文番号126006
ジャーナルNuclear Fusion
57
12
DOI
出版ステータス出版済み - 9 12 2017

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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