Study of ion viscosity by spontaneous L-H transitions under marginal hot cathode biasing in the Tohoku University Heliac

S. Kitajima, H. Takahashi, Y. Tanaka, H. Utoh, M. Takenaga, M. Yokoyama, S. Inagaki, Y. Suzuki, K. Nishimura, H. Ogawa, M. Takayama, J. Shinde, M. Ogawa, H. Aoyama, K. Iwazaki, Atsushi Okamoto, K. Shinto, M. Sasao

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Using the spontaneous transition condition under marginal hot cathode biasing, the ion viscosity at the L-H transition was estimated in various magnetic configurations in the Tohoku University Heliac. The critical viscosity, which is the viscosity at the transition point, was experimentally estimated from the J × B driving force. The critical viscosities in different magnetic configurations were in agreement with the neoclassical predictions within a factor of 2 and were compared with the viscosities obtained in the externally forced biasing experiments. Although the transition points were spread over a wide range, poloidal Mach numbers at the transition point were concentrated near the viscosity maxima predicted by the theory.

本文言語English
論文番号035002
ジャーナルNuclear Fusion
48
3
DOI
出版ステータスPublished - 2008 3 1

ASJC Scopus subject areas

  • 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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