On the spatial structure of solitary radial electric field at the plasma edge in toroidal confinement devices

K. Itoh, S. I. Itoh, K. Kamiya, N. Kasuya

研究成果: ジャーナルへの寄稿学術誌査読

18 被引用数 (Scopus)

抄録

The solitary radial electric field in the edge of toroidal plasma is studied based on the electric field bifurcation model. Results are applied to tokamak and helical plasmas, and the dependence of the electric field structure on the plasma parameters and geometrical factors is analyzed. The order of magnitude estimate for tokamak plasma is not far from experimental observations. It is shown that, in helical plasmas, the height of electric field structure is reduced substantially owing to the ripple particle transport, while the width is influenced less. The implications of the results for the limit of achievable gradient in the H-mode pedestal are also discussed.

本文言語英語
論文番号075008
ジャーナルPlasma Physics and Controlled Fusion
57
7
DOI
出版ステータス出版済み - 7月 1 2015

!!!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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