論文

査読有り 筆頭著者
2020年9月

Influence of plasma boundary shape on helical core/long-lived mode in tokamak plasmas

PHYSICS OF PLASMAS
  • Y. Nakamura
  • ,
  • A. Ishizawa
  • ,
  • Y. Ishida

27
9
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1063/5.0013652
出版者・発行元
AMER INST PHYSICS

Helical distortion of the core part of tokamak plasma, which is called a helical core or a long-lived mode, is investigated by means of three-dimensional magnetohydrodynamic equilibrium calculations. It is found that the magnitude of the helical distortion strongly depends on the shape of the plasma boundary for weakly reversed shear plasmas. The triangularity of the boundary enhances the amplitude of helical distortion. In addition, reversed D-shape plasmas also exhibit a helical core. It is also found that the triangularity lowers the critical beta for the onset of a helical core; furthermore, the critical beta vanishes when the triangularity exceeds a certain value. On the other hand, the influence of the ellipticity on the amplitude of helical distortion strongly depends on beta. The ellipticity enhances the amplitude at high beta, while it reduces the amplitude at low beta.


リンク情報
DOI
https://doi.org/10.1063/5.0013652
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000575258800001&DestApp=WOS_CPL
ID情報
  • DOI : 10.1063/5.0013652
  • ISSN : 1070-664X
  • eISSN : 1089-7674
  • Web of Science ID : WOS:000575258800001

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