Self-sustained turbulence and L-mode confinement in toroidal plasmas. II

K. Itoh, S. I. Itoh, A. Fukuyama, M. Yagi, M. Azumi

研究成果: Contribution to journalArticle査読

28 被引用数 (Scopus)

抄録

A theory of the anomalous transport coefficient in toroidal helical systems (such as stellarators, torsatron and Heliotron devices) is developed. The theoretical formalism of self-sustained turbulence is applied to the interchange mode turbulence and ballooning mode turbulence. The nonlinear destabilization of microscopic modes by the current diffusivity is the key for the anomalous transport. A general form of the anomalous transport coefficient in toroidal plasmas is derived. The intrinsic importance of the pressure gradient, collisionless skin depth and Alfven transit time is confirmed. The geometrical factors which characterize the magnetic configurations are also obtained. The theory is extended to study the influence of parallel compressibility. The ion viscosities of the perpendicular and parallel momenta, electron viscosity and energy diffusion coefficient are obtained. The comparison with experimental results is also given.

本文言語英語
論文番号009
ページ(範囲)1501-1520
ページ数20
ジャーナルPlasma Physics and Controlled Fusion
36
9
DOI
出版ステータス出版済み - 1994

All Science Journal Classification (ASJC) codes

  • 原子力エネルギーおよび原子力工学
  • 凝縮系物理学

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