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首页> 外文期刊>Nuclear fusion >Non-linear wave-particle interactions and fast ion loss induced by multiple Alfven eigenmodes in the DⅢ-D tokamak
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Non-linear wave-particle interactions and fast ion loss induced by multiple Alfven eigenmodes in the DⅢ-D tokamak

机译:DⅢ-D托卡马克中多种Alfven本征模式引起的非线性波粒相互作用和快速离子损失

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摘要

A new non-linear feature has been observed in fast-ion loss from tokamak plasmas in the form of oscillations at the sum, difference and second harmonic frequencies of two independent Alfven eigenmodes (AEs). Full orbit calculations and analytic theory indicate this non-linearity is due to coupling of fast-ion orbital response as it passes through each AE-a change in wave-particle phase k · r by one mode alters the force exerted by the next. The loss measurement is of barely confined, non-resonant particles, while similar non-linear interactions can occur between well-confined particles and multiple AEs leading to enhanced fast-ion transport.
机译:在两个独立的Alfven本征模式(AEs)的总和,差和二次谐波频率处的振荡形式下,从托卡马克等离子体中观察到快速离子损失,这是一个新的非线性特征。完整的轨道计算和分析理论表明,这种非线性是由于快离子轨道响应通过每个AE时耦合而引起的-波粒相位k·r的变化通过一种模式改变了下一模式所施加的力。损耗测量是对几乎没有约束的非谐振粒子的,而在受约束的粒子与多个AE之间可能发生类似的非线性相互作用,从而导致增强的快速离子传输。

著录项

  • 来源
    《Nuclear fusion》 |2014年第8期|083005.1-083005.5|共5页
  • 作者单位

    Department of Physics and Astronomy, University of California-Irvine, Irvine, California 92697, USA;

    Princeton Plasma Physics Laboratory, PO Box 451, Princeton, New Jersey 08543, USA;

    Department of Physics and Astronomy, University of California-Irvine, Irvine, California 92697, USA;

    General Atomics, PO Box 85608, San Diego, California 92186, USA;

    General Atomics, PO Box 85608, San Diego, California 92186, USA;

    General Atomics, PO Box 85608, San Diego, California 92186, USA;

    Princeton Plasma Physics Laboratory, PO Box 451, Princeton, New Jersey 08543, USA;

    General Atomics, PO Box 85608, San Diego, California 92186, USA;

  • 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
  • 中图分类
  • 关键词

    non-linear; energetic particles; multi-wave particle interactions;

    机译:非线性高能粒子多波粒子相互作用;

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