Identification of zonal flows in a toroidal plasma

A. Fujisawa; K. Itoh; H. Iguchi; K. Matsuoka; S. Okamura; A. Shimizu; T. Minami; Y. Yoshimura; K. Nagaoka; C. Takahashi; M. Kojima; H. Nakano; S. Ohsima; S. Nishimura; M. Isobe; C. Suzuki; T. Akiyama; K. Ida; K. Toi; S. I. Itoh; P. H. Diamond

doi:10.1103/PhysRevLett.93.165002

Identification of zonal flows in a toroidal plasma

A. Fujisawa, K. Itoh, H. Iguchi, K. Matsuoka, S. Okamura, A. Shimizu, T. Minami, Y. Yoshimura, K. Nagaoka, C. Takahashi, M. Kojima, H. Nakano, S. Ohsima, S. Nishimura, M. Isobe, C. Suzuki, T. Akiyama, K. Ida, K. Toi, S. I. ItohP. H. Diamond

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Article › peer-review

327 Citations (Scopus)

Abstract

An experimental confirmation of the presence of zonal flows in magnetically confined toroidal plasma using an advanced diagnostic system-dual heavy ion beam probes was presented. A fluctuation spectrum of electric field, a spatiotemporal structure of the zonal flows, their long-range correlation with toroidal symmetry, and the difference in the zonal flow amplitude with and without a transport barrier were provided by the simultaneous observation of an electric field at two distant toroidal locations in the high temperature plasma. The waveforms without any phase shift demonstrate the toroidal symmetry of electric field fluctuation. It was observed that the waveform indicate the fluctuation amplitude of ∼1V.

Original language	English
Article number	165002
Pages (from-to)	165002-1-165002-4
Journal	Physical review letters
Volume	93
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.93.165002
Publication status	Published - Oct 15 2004

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.93.165002

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Fujisawa, A., Itoh, K., Iguchi, H., Matsuoka, K., Okamura, S., Shimizu, A., Minami, T., Yoshimura, Y., Nagaoka, K., Takahashi, C., Kojima, M., Nakano, H., Ohsima, S., Nishimura, S., Isobe, M., Suzuki, C., Akiyama, T., Ida, K., Toi, K., ... Diamond, P. H. (2004). Identification of zonal flows in a toroidal plasma. Physical review letters, 93(16), 165002-1-165002-4. Article 165002. https://doi.org/10.1103/PhysRevLett.93.165002

Fujisawa, A, Itoh, K, Iguchi, H, Matsuoka, K, Okamura, S, Shimizu, A, Minami, T, Yoshimura, Y, Nagaoka, K, Takahashi, C, Kojima, M, Nakano, H, Ohsima, S, Nishimura, S, Isobe, M, Suzuki, C, Akiyama, T, Ida, K, Toi, K, Itoh, SI & Diamond, PH 2004, 'Identification of zonal flows in a toroidal plasma', Physical review letters, vol. 93, no. 16, 165002, pp. 165002-1-165002-4. https://doi.org/10.1103/PhysRevLett.93.165002

@article{19b7d31739ae48d2afc3750eb03010c4,

title = "Identification of zonal flows in a toroidal plasma",

abstract = "An experimental confirmation of the presence of zonal flows in magnetically confined toroidal plasma using an advanced diagnostic system-dual heavy ion beam probes was presented. A fluctuation spectrum of electric field, a spatiotemporal structure of the zonal flows, their long-range correlation with toroidal symmetry, and the difference in the zonal flow amplitude with and without a transport barrier were provided by the simultaneous observation of an electric field at two distant toroidal locations in the high temperature plasma. The waveforms without any phase shift demonstrate the toroidal symmetry of electric field fluctuation. It was observed that the waveform indicate the fluctuation amplitude of ∼1V.",

author = "A. Fujisawa and K. Itoh and H. Iguchi and K. Matsuoka and S. Okamura and A. Shimizu and T. Minami and Y. Yoshimura and K. Nagaoka and C. Takahashi and M. Kojima and H. Nakano and S. Ohsima and S. Nishimura and M. Isobe and C. Suzuki and T. Akiyama and K. Ida and K. Toi and Itoh, {S. I.} and Diamond, {P. H.}",

note = "Funding Information: We thank Dr. T. S. Hahm, Dr. S. Toda, Dr. H. Sanuki, Dr. H. Sugama, and Dr. M. Yagi for useful discussion, and Professor O. Motojima, Professor M. Fujiwara, and Professor Y. Hamada for their support. We also thank Mr. K. Miyajima, Ms. Y. Tsukigawara, and Mr. R. Akiyama for their CHS operation, and Mr. Ohtawa (Shonan Giken Co.), Mr. A. Shimizu (Shosei Industry), and Mr. S. Wakuta (Sanwa Shoji Co.) for their help in?> the second HIBP construction. This work is partly supported by the Grant-in-Aids for Scientific Research (No. 15360497) and Specially Promoted Research (No. 16002005), the collaboration programs of NIFS and of the Research Institute for Applied Mechanics of Kyushu University, and Asada Science foundation.",

year = "2004",

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doi = "10.1103/PhysRevLett.93.165002",

language = "English",

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T1 - Identification of zonal flows in a toroidal plasma

AU - Fujisawa, A.

AU - Itoh, K.

AU - Iguchi, H.

AU - Matsuoka, K.

AU - Okamura, S.

AU - Shimizu, A.

AU - Minami, T.

AU - Yoshimura, Y.

AU - Nagaoka, K.

AU - Takahashi, C.

AU - Kojima, M.

AU - Nakano, H.

AU - Ohsima, S.

AU - Nishimura, S.

AU - Isobe, M.

AU - Suzuki, C.

AU - Akiyama, T.

AU - Ida, K.

AU - Toi, K.

AU - Itoh, S. I.

AU - Diamond, P. H.

N1 - Funding Information: We thank Dr. T. S. Hahm, Dr. S. Toda, Dr. H. Sanuki, Dr. H. Sugama, and Dr. M. Yagi for useful discussion, and Professor O. Motojima, Professor M. Fujiwara, and Professor Y. Hamada for their support. We also thank Mr. K. Miyajima, Ms. Y. Tsukigawara, and Mr. R. Akiyama for their CHS operation, and Mr. Ohtawa (Shonan Giken Co.), Mr. A. Shimizu (Shosei Industry), and Mr. S. Wakuta (Sanwa Shoji Co.) for their help in?> the second HIBP construction. This work is partly supported by the Grant-in-Aids for Scientific Research (No. 15360497) and Specially Promoted Research (No. 16002005), the collaboration programs of NIFS and of the Research Institute for Applied Mechanics of Kyushu University, and Asada Science foundation.

PY - 2004/10/15

Y1 - 2004/10/15

N2 - An experimental confirmation of the presence of zonal flows in magnetically confined toroidal plasma using an advanced diagnostic system-dual heavy ion beam probes was presented. A fluctuation spectrum of electric field, a spatiotemporal structure of the zonal flows, their long-range correlation with toroidal symmetry, and the difference in the zonal flow amplitude with and without a transport barrier were provided by the simultaneous observation of an electric field at two distant toroidal locations in the high temperature plasma. The waveforms without any phase shift demonstrate the toroidal symmetry of electric field fluctuation. It was observed that the waveform indicate the fluctuation amplitude of ∼1V.

AB - An experimental confirmation of the presence of zonal flows in magnetically confined toroidal plasma using an advanced diagnostic system-dual heavy ion beam probes was presented. A fluctuation spectrum of electric field, a spatiotemporal structure of the zonal flows, their long-range correlation with toroidal symmetry, and the difference in the zonal flow amplitude with and without a transport barrier were provided by the simultaneous observation of an electric field at two distant toroidal locations in the high temperature plasma. The waveforms without any phase shift demonstrate the toroidal symmetry of electric field fluctuation. It was observed that the waveform indicate the fluctuation amplitude of ∼1V.

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JF - Physical review letters

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ER -

Identification of zonal flows in a toroidal plasma

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