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arXiv 1808.09110physics.plasm-ph
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平衡$E \times B$剪切流背景中由于共振磁扰动引起的纬向流阻尼的增强

Enhancement of zonal flow damping due to resonant magnetic perturbations in the background of an equilibrium $E \times B$ sheared flow

M. Leconte, R. Singh

摘要:

利用参数相互作用理论,我们证明了平衡剪切旋转可以增强参考文献[M]中的纬向流阻尼效应。Leconte和P.H. Diamond,\emph{Phys. Plasmas} 19,055903(2012)]。该附加阻尼贡献与$(L_s/L_V)^2 \times δB_r^2 / B^2$成比例,其中$L_s/L_V$是磁剪切长度与平衡$E \times B$流剪切的标度长度的比率,并且$δB_r / B$是相对于背景磁场归一化的外部磁扰动的幅度。

英文摘要:

Using a parametric interaction formalism, we show that the equilibrium sheared rotation can enhance the zonal flow damping effect found in Ref. [M. Leconte and P.H. Diamond, \emph{Phys. Plasmas} 19, 055903 (2012)]. This additional damping contribution is proportional to $(L_s/L_V)^2 \times δB_r^2 / B^2$, where $L_s/L_V$ is the ratio of magnetic shear length to the scale-length of equilibrium $E \times B$ flow shear, and $δB_r / B$ is the amplitude of the external magnetic perturbation normalized to the background magnetic field.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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