Three-Dimensional Numerical Analysis of Ion Diamagnetic Effects on Interchange Mode in Heliotron Plasmas

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  • NICOLAS Timothee
    National Institute for Fusion Science
  • ICHIGUCHI Katsuji
    National Institute for Fusion Science The Graduate University of Advanced Study, SOKENDAI
  • SATO Masahiko
    National Institute for Fusion Science
  • TODO Yasushi
    National Institute for Fusion Science The Graduate University of Advanced Study, SOKENDAI
  • SUZUKI Yasuhiro
    National Institute for Fusion Science The Graduate University of Advanced Study, SOKENDAI
  • ISHIZAWA Akihiro
    National Institute for Fusion Science The Graduate University of Advanced Study, SOKENDAI
  • SAKAKIBARA Satoru
    National Institute for Fusion Science The Graduate University of Advanced Study, SOKENDAI

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Abstract

<p>The influence of the ion diamagnetic flow on the resistive interchange mode including dissipation in the Large Helical Device (LHD) plasmas is investigated with three-dimensional (3D) magnetohydrodynamic (MHD) codes. The contribution on the interchange mode stability depends on the difference between the ideal growth rate γI and the single fluid growth rate including resistivity and dissipation γD. When γD is close to γI, the ion diamagnetic effects are stabilizing. In this case the stabilization can be approximated by an analytic formula by analogy with the case without dissipation. When γD is far from γI the ion diamagnetic effects are destabilizing.</p>

Journal

  • Plasma and Fusion Research

    Plasma and Fusion Research 10 (0), 3403018-3403018, 2015

    The Japan Society of Plasma Science and Nuclear Fusion Research

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