Reduction of ion thermal diffusivity associated with the transition of the radial electric field in neutral-beam-heated plasmas in the large helical device

K. Ida, H. Funaba, S. Kado, K. Narihara, K. Tanaka, Y. Takeiri, Y. Nakamura, N. Ohyabu, K. Yamazaki, M. Yokoyama, S. Murakami, N. Ashikawa, P. C. DeVries, M. Emoto, M. Goto, H. Idei, K. Ikeda, S. Inagaki, N. Inoue, M. IsobeK. Itoh, O. Kaneko, K. Kawahata, K. Khlopenkov, A. Komori, S. Kubo, R. Kumazawa, Y. Liang, S. Masuzaki, T. Minami, J. Miyazawa, T. Morisaki, S. Morita, T. Mutoh, S. Muto, Y. Nagayama, H. Nakanish, K. Nishimura, N. Noda, T. Notake, T. Kobuchi, S. Ohdachi, K. Ohkubo, Y. Oka, M. Osakabe, T. Ozaki, R. O. Pavlichenko, B. J. Peterson, A. Sagara, K. Saito, S. Sakakibara, R. Sakamoto, H. Sanuki, H. Sasao, M. Sasao, K. Sato, M. Sato, T. Seki, T. Shimozuma, M. Shoji, H. Suzuki, S. Sudo, N. Tamura, K. Toi, T. Tokuzawa, Y. Torii, K. Tsumori, T. Yamamoto, H. Yamada, I. Yamada, S. Yamaguchi, S. Yamamoto, Y. Yoshimura, K. Y. Watanabe, T. Watari, Y. Hamada, O. Motojima, M. Fujiwara

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Abstract

A study of reduction of ion thermal diffusivity in the neutral-beam-heated plasmas in the large helical device was performed. The thermal diffusivity was associated with the transition of the radial electric field. There was a good agreement of the values of radial electric field with the neoclassical theory. There was significant increase of electron temperature and a clear reduction of electron thermal diffusivity in the plasma core in the electron root.

Original languageEnglish
Pages (from-to)5297-5300
Number of pages4
JournalPhysical review letters
Volume86
Issue number23
DOIs
Publication statusPublished - Jun 4 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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