Study of non-linear coupling of fluctuations at long distance in LHD

S. Inagaki, T. Tokuzawa, T. Kobayashi, S. I. Itoh, K. Itoh, K. Ida, A. Fujisawa, S. Kubo, T. Shimozuma, N. Tamura, N. Kasuya, H. Tsuchiya, Y. Nagayama

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

Non-linear coupling between fluctuations at different radial locations is observed on the Large Helical Device (LHD) plasma. The summed bi-coherence between the low frequency macro-scale fluctuation (frequency is f=2.75kHz) at ρ=reff/a99=0.63 (where a99 is averaged plasma radius) and the high-frequency micro-scale fluctuations (frequency range of f>150kHz) at ρ=0.88 is found to converge to a non-zero and finite value. The bi-phase analysis provides another basis for the non-linear interaction across the long distance. These results are associated with the violation local closure for transport relation.

本文言語英語
論文番号114014
ジャーナルNuclear Fusion
54
11
DOI
出版ステータス出版済み - 10 1 2014

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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