Observation of flow reversal in plasmas with a neoclassical internal transport barrier in CHS

K. Ida; T. Minami; Y. Yoshimura; A. Fujisawa; C. Suzuki; M. Yokoyama; S. Murakami; S. Okamura; S. Nishimura; M. Isobe; H. Iguchi; K. Itoh; S. Kado; Y. Liang; I. Nomura; M. Osakabe; C. Takahashi; K. Tanaka; K. Matsuoka

doi:10.1088/0741-3335/44/3/306

Observation of flow reversal in plasmas with a neoclassical internal transport barrier in CHS

K. Ida, T. Minami, Y. Yoshimura, A. Fujisawa, C. Suzuki, M. Yokoyama, S. Murakami, S. Okamura, S. Nishimura, M. Isobe, H. Iguchi, K. Itoh, S. Kado, Y. Liang, I. Nomura, M. Osakabe, C. Takahashi, K. Tanaka, K. Matsuoka

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

10 Citations (Scopus)

Abstract

A reversal of toroidal flow is observed in plasmas where a large positive electric field and a sharp electron temperature gradient are sustained inside the internal transport barrier in a compact helical system. This observation shows that the spontaneous toroidal flow in the direction anti-parallel to the <E_r × B_θ> drift becomes large enough to reverse the toroidal flow driven by a tangentially injected neutral beam. The difference in the direction and the magnitude of the spontaneous toroidal flow are also discussed.

Original language	English
Pages (from-to)	361-370
Number of pages	10
Journal	Plasma Physics and Controlled Fusion
Volume	44
Issue number	3
DOIs	https://doi.org/10.1088/0741-3335/44/3/306
Publication status	Published - Mar 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

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Ida, K., Minami, T., Yoshimura, Y., Fujisawa, A., Suzuki, C., Yokoyama, M., Murakami, S., Okamura, S., Nishimura, S., Isobe, M., Iguchi, H., Itoh, K., Kado, S., Liang, Y., Nomura, I., Osakabe, M., Takahashi, C., Tanaka, K., & Matsuoka, K. (2002). Observation of flow reversal in plasmas with a neoclassical internal transport barrier in CHS. Plasma Physics and Controlled Fusion, 44(3), 361-370. https://doi.org/10.1088/0741-3335/44/3/306

Ida, K, Minami, T, Yoshimura, Y, Fujisawa, A, Suzuki, C, Yokoyama, M, Murakami, S, Okamura, S, Nishimura, S, Isobe, M, Iguchi, H, Itoh, K, Kado, S, Liang, Y, Nomura, I, Osakabe, M, Takahashi, C, Tanaka, K & Matsuoka, K 2002, 'Observation of flow reversal in plasmas with a neoclassical internal transport barrier in CHS', Plasma Physics and Controlled Fusion, vol. 44, no. 3, pp. 361-370. https://doi.org/10.1088/0741-3335/44/3/306

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abstract = "A reversal of toroidal flow is observed in plasmas where a large positive electric field and a sharp electron temperature gradient are sustained inside the internal transport barrier in a compact helical system. This observation shows that the spontaneous toroidal flow in the direction anti-parallel to the <Er × Bθ> drift becomes large enough to reverse the toroidal flow driven by a tangentially injected neutral beam. The difference in the direction and the magnitude of the spontaneous toroidal flow are also discussed.",

author = "K. Ida and T. Minami and Y. Yoshimura and A. Fujisawa and C. Suzuki and M. Yokoyama and S. Murakami and S. Okamura and S. Nishimura and M. Isobe and H. Iguchi and K. Itoh and S. Kado and Y. Liang and I. Nomura and M. Osakabe and C. Takahashi and K. Tanaka and K. Matsuoka",

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AU - Ida, K.

AU - Minami, T.

AU - Yoshimura, Y.

AU - Fujisawa, A.

AU - Suzuki, C.

AU - Yokoyama, M.

AU - Murakami, S.

AU - Okamura, S.

AU - Nishimura, S.

AU - Isobe, M.

AU - Iguchi, H.

AU - Itoh, K.

AU - Kado, S.

AU - Liang, Y.

AU - Nomura, I.

AU - Osakabe, M.

AU - Takahashi, C.

AU - Tanaka, K.

AU - Matsuoka, K.

PY - 2002/3

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AB - A reversal of toroidal flow is observed in plasmas where a large positive electric field and a sharp electron temperature gradient are sustained inside the internal transport barrier in a compact helical system. This observation shows that the spontaneous toroidal flow in the direction anti-parallel to the <Er × Bθ> drift becomes large enough to reverse the toroidal flow driven by a tangentially injected neutral beam. The difference in the direction and the magnitude of the spontaneous toroidal flow are also discussed.

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Observation of flow reversal in plasmas with a neoclassical internal transport barrier in CHS

Abstract

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