Experimental evidence of a zonal magnetic field in a toroidal plasma

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

doi:10.1103/PhysRevLett.98.165001

Experimental evidence of a zonal magnetic field in a toroidal plasma

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

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

41 Citations (Scopus)

Abstract

A zonal magnetic field is found in a toroidal plasma. The magnetic field has a symmetric bandlike structure, which is uniform in the toroidal and poloidal directions and varies radially with a finite wavelength of mesoscale, which is analogous to zonal flows. A time-dependent bicoherence analysis reveals that the magnetic field should be generated by the background plasma turbulence. The discovery is classified as a new kind of phenomenon of structured magnetic field generation, giving insight into phenomena such as dipole field generation in rotational planets.

Original language	English
Article number	165001
Journal	Physical review letters
Volume	98
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.98.165001
Publication status	Published - Apr 18 2007

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.98.165001

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Fujisawa, A., Itoh, K., Shimizu, A., Nakano, H., Ohshima, S., Iguchi, H., Matsuoka, K., Okamura, S., Minami, T., Yoshimura, Y., Nagaoka, K., Ida, K., Toi, K., Takahashi, C., Kojima, M., Nishimura, S., Isobe, M., Suzuki, C., Akiyama, T., ... Diamond, P. H. (2007). Experimental evidence of a zonal magnetic field in a toroidal plasma. Physical review letters, 98(16), Article 165001. https://doi.org/10.1103/PhysRevLett.98.165001

Fujisawa, A, Itoh, K, Shimizu, A, Nakano, H, Ohshima, S, Iguchi, H, Matsuoka, K, Okamura, S, Minami, T, Yoshimura, Y, Nagaoka, K, Ida, K, Toi, K, Takahashi, C, Kojima, M, Nishimura, S, Isobe, M, Suzuki, C, Akiyama, T, Nagashima, Y, Itoh, SI & Diamond, PH 2007, 'Experimental evidence of a zonal magnetic field in a toroidal plasma', Physical review letters, vol. 98, no. 16, 165001. https://doi.org/10.1103/PhysRevLett.98.165001

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AU - Fujisawa, A.

AU - Itoh, K.

AU - Shimizu, A.

AU - Nakano, H.

AU - Ohshima, S.

AU - Iguchi, H.

AU - Matsuoka, K.

AU - Okamura, S.

AU - Minami, T.

AU - Yoshimura, Y.

AU - Nagaoka, K.

AU - Ida, K.

AU - Toi, K.

AU - Takahashi, C.

AU - Kojima, M.

AU - Nishimura, S.

AU - Isobe, M.

AU - Suzuki, C.

AU - Akiyama, T.

AU - Nagashima, Y.

AU - Itoh, S. I.

AU - Diamond, P. H.

PY - 2007/4/18

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Experimental evidence of a zonal magnetic field in a toroidal plasma

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