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Analysis of damping rate measurements of toroidal Alfven eigenmodes as a function of n: part II

机译:环形Alfven本征模的阻尼率测量值与n的关系分析:第二部分

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摘要

Complementing the database approach that has been presented in part I, this paper probes into individual plasma discharges and investigates the damping rate variations that are driven by the evolving plasma configurations. In addition to confirming the stabilizing effect of elongated plasma shapings on toroidal Alfven eigenmodes, the significance of the span of the q profile is shown experimentally for the first time. It is found that, under conditions of transient current density profiles, the damping rate of medium-n modes has a dependence on the background plasma parameters that is distinctively different from that of low-n modes. The analysis of the correlation of the damping rate variations with the changes of the q profile shape and the alignment of the gaps of the shear Alfven continuum leads to an assessment of the effect of the interaction of the modes with the Alfven continuum as a function of n.
机译:作为对第一部分中介绍的数据库方法的补充,本文探讨了各个等离子体的放电情况,并研究了由不断发展的等离子体配置驱动的阻尼率变化。除了确认延长的等离子体形状对环形Alfven本征模的稳定作用外,首次通过实验显示了q分布图跨度的重要性。发现,在瞬态电流密度分布的条件下,中n型模式的阻尼率与背景等离子体参数的依赖性明显不同于低n型模式。对阻尼率变化与q轮廓形状的变化以及剪切Alfven连续体的间隙对齐的相关性的分析导致对模态与Alfven连续体的相互作用的影响进行了评估,即。

著录项

  • 来源
    《Nuclear fusion》 |2012年第2期|p.023014.1-023014.11|共11页
  • 作者

    T. Panis; A. Fasoli; D. Testa;

  • 作者单位

    Ecole Polytechnique Federate de Lausanne (EPFL), Centre de Recherches en Physique des Plasmas, Association EURATOM-Confederation Suisse, CH-1015, Lausanne, Switzerland;

    Ecole Polytechnique Federate de Lausanne (EPFL), Centre de Recherches en Physique des Plasmas, Association EURATOM-Confederation Suisse, CH-1015, Lausanne, Switzerland;

    Ecole Polytechnique Federate de Lausanne (EPFL), Centre de Recherches en Physique des Plasmas, Association EURATOM-Confederation Suisse, CH-1015, Lausanne, Switzerland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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