Transport analysis of the effect of zonal flows on electron internal transport barriers in toroidal helical plasmas

S. Toda, K. Itoh, A. Fujisawa, S. I. Itoh, M. Yagi, A. Fukuyama, P. H. Diamond, K. Ida

研究成果: Contribution to journalArticle査読

10 被引用数 (Scopus)

抄録

The role of zonal flows in the formation of transport barrier in helical plasmas is analysed using the transport code. A set of one-dimensional transport equations is analysed, including the effect of zonal flows. The turbulent transport coefficient is shown to be suppressed when the plasma state takes the strong positive radial electric field. This bifurcation of the turbulent transport is newly caused by the change of the damping rate of zonal flows. It is theoretically demonstrated that the damping rate of zonal flows plays an important role in global confinement in toroidal plasmas.

本文言語英語
論文番号024
ページ(範囲)914-919
ページ数6
ジャーナルNuclear Fusion
47
8
DOI
出版ステータス出版済み - 8 1 2007

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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