Turbulent Transport of Poloidal Momentum in Toroidal Plasmas

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In this article, we discuss the turbulent transport of the momentum (component perpendicular to main magnetic field) in toroidal plasmas. The fluctuations in the quasi-linear response tend to induce the shear of mean poloidal flow, as in the case of driving the zonal flows. The case in which the shear of mean poloidal flow and the mesoscale zonal flows coexist is studied. Zonal flows, which have a more rapid growth rate than the shear of mean flow, reaches the nonlinear saturation state, and modify the interaction between microscopic fluctuations and the shear of mean flow. Taking into account the screening effect of zonal flows, the shear of mean poloidal flow is subject to diffusive damping. Responses to the external force are also studied. A new bifurcation (from the state where mesoscale zonal flows are dominant to the one where zonal flows are suppressed) is found.

収録刊行物

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 76(8), "84502-1"-"84502-4", 2007-08-15

    一般社団法人日本物理学会

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各種コード

  • NII論文ID(NAID)
    110006366848
  • NII書誌ID(NCID)
    AA00704814
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00319015
  • NDL 記事登録ID
    8863591
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A404
  • データ提供元
    CJP書誌  NDL  NII-ELS 
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