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

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

doi:10.1088/0029-5515/54/11/114014

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

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

核融合力学部門

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

11 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=r_eff/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
巻	54
号	11
DOI	https://doi.org/10.1088/0029-5515/54/11/114014
出版ステータス	出版済み - 10月 1 2014

!!!All Science Journal Classification (ASJC) codes

核物理学および高エネルギー物理学
凝縮系物理学

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10.1088/0029-5515/54/11/114014

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title = "Study of non-linear coupling of fluctuations at long distance in LHD",

abstract = "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.",

author = "Inagaki Shigeru and T. Tokuzawa and T. Kobayashi and Sanae Itoh and K. Itoh and K. Ida and A. Fujisawa and S. Kubo and T. Shimozuma and N. Tamura and N. Kasuya and H. Tsuchiya and Y. Nagayama",

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doi = "10.1088/0029-5515/54/11/114014",

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T1 - Study of non-linear coupling of fluctuations at long distance in LHD

AU - Shigeru, Inagaki

AU - Tokuzawa, T.

AU - Kobayashi, T.

AU - Itoh, Sanae

AU - Itoh, K.

AU - Ida, K.

AU - Fujisawa, A.

AU - Kubo, S.

AU - Shimozuma, T.

AU - Tamura, N.

AU - Kasuya, N.

AU - Tsuchiya, H.

AU - Nagayama, Y.

PY - 2014/10/1

Y1 - 2014/10/1

N2 - 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.

AB - 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.

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VL - 54

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 11

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ER -

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

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!!!All Science Journal Classification (ASJC) codes

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