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Impact of hot particles on resistive wall mode stability in rotating high-beta plasmas

机译:热粒子对旋转高β等离子体中电阻壁模式稳定性的影响

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摘要

We investigate kinetic effects of hot particles and rotating bulk plasmas on resistive wall mode (RWM) stability. To this end, we invoke the hybrid kinetic-magnetohydrodynamic (MHD) model, extended to include self-consistent rotation effects. The extended model needs macroscopic 'rotation' due to collective motion of hot and bulk particles. In this paper, we point out that the rotation of hot particles is arbitrary in the hybrid kinetic-MHD formalism, due to the assumption of small hot particle density. To remove this arbitrariness, by considering an equilibrium distribution function of hot particles interacting with rotating bulk particles, we compute the 'rotation' of hot particles. By applying the extended hybrid kinetic-MHD model to bulk and hot particles, we have carried out numerical analysis of RWM stability. By varying parameters for neutral beam injection (injection energy and injection pitch angle), we find that new stable regions arise due to additional energy exchange between RWMs and hot particles, induced by the hot particles' rotation.
机译:我们研究了热粒子和旋转体等离子体对电阻壁模式(RWM)稳定性的动力学影响。为此,我们调用了混合动力-磁流体动力(MHD)模型,该模型扩展为包括自洽旋转效应。由于热粒子和块粒子的集体运动,扩展模型需要宏观的“旋转”。在本文中,我们指出,由于假设热粒子密度较小,在混合动力学MHD形式学中热粒子的旋转是任意的。为了消除这种任意性,通过考虑热粒子与旋转的散装粒子相互作用的平衡分布函数,我们计算了热粒子的“旋转”。通过将扩展的混合动力学MHD模型应用于块状和热粒子,我们对RWM稳定性进行了数值分析。通过改变中性束注入的参数(注入能量和注入螺距角),我们发现新的稳定区域是由于热粒子旋转引起的RWM和热粒子之间的额外能量交换而产生的。

著录项

  • 来源
    《Nuclear fusion》 |2017年第12期|605-615|共11页
  • 作者单位

    National Institutes for Quantum and Radiological Science and Technology, 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan;

    National Institutes for Quantum and Radiological Science and Technology, 2-166 Omotedate, Obuchi, Rokkasho, Aomori 039-3212, Japan;

    National Institutes for Quantum and Radiological Science and Technology, 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan;

    National Institutes for Quantum and Radiological Science and Technology, 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan;

    National Institutes for Quantum and Radiological Science and Technology, 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan;

    National Institutes for Quantum and Radiological Science and Technology, 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan;

    National Institutes for Quantum and Radiological Science and Technology, 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan;

    National Institutes for Quantum and Radiological Science and Technology, 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan;

    National Institutes for Quantum and Radiological Science and Technology, 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan;

  • 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

    kinetic MHD; hot particle; resistive wall mode;

    机译:动力学MHD;热粒子电阻壁模式;

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