Extension of the operational regime in high-temperature plasmas and the dynamic-transport characteristics in the LHD

H. Takahashi, M. Osakabe, K. Nagaoka, S. Murakami, I. Yamada, Y. Takeiri, M. Yokoyama, H. Lee, K. Ida, R. Seki, C. Suzuki, M. Yoshinuma, T. Ido, A. Shimizu, M. Goto, S. Morita, T. Shimozuma, S. Kubo, S. Satake, S. MatsuokaN. Tamura, H. Tsuchiya, K. Tanaka, M. Nunami, A. Wakasa, K. Tsumori, K. Ikeda, H. Nakano, M. Kisaki, Y. Yoshimura, M. Nishiura, H. Igami, T. Seki, H. Kasahara, K. Saito, R. Kumazawa, S. Muto, K. Narihara, T. Mutoh, O. Kaneko, H. Yamada

研究成果: ジャーナルへの寄稿学術誌査読

29 被引用数 (Scopus)

抄録

A central ion temperature of 7 keV in a neutral beam injection (NBI)-heated plasma and a central-electron temperature of 20 keV in an electron cyclotron resonance heating plasma were achieved in the Large Helical Device (LHD) using an upgraded heating system with a newly installed perpendicular-NB injector and gyrotrons. The values of Ti and Te significantly exceeded 5.6 and 15 keV, obtained in previous experiments, respectively. High-T i plasma was obtained using a carbon pellet injection and the kinetic-energy confinement improved by a factor of 1.5. Transport analysis of the high-Ti plasmas showed that the ion-thermal diffusivity and the viscosity were reduced after the pellet injection. Dynamic-transport analysis is applied and the transition to the ion-internal-transport barrier and back transition are discussed.

本文言語英語
論文番号073034
ジャーナルNuclear Fusion
53
7
DOI
出版ステータス出版済み - 7月 2013
外部発表はい

!!!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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