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A Theoretical Framework of Chorus Wave Excitation

机译：合唱波激励的理论框架

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摘要

We propose a self-consistent theoretical framework of chorus wave excitation, which describes the evolution of the whistler fluctuation spectrum as well as the suprathermal electron distribution function. The renormalized hot electron response is cast in the form of a Dyson-like equation, which then leads to evolution equations for nonlinear fluctuation growth and frequency shift. This approach allows us to analytically derive for the first time exactly the same expression for the chorus chirping rate originally proposed by Vomvoridis et al. (1982). Chorus chirping is shown to correspond to maximization of wave particle power exchange, where each individual wave belonging to the whistler wave packet is characterized by small nonlinear frequency shift. We also show that different interpretations of chorus chirping proposed in published literature have a consistent reconciliation within the present theoretical framework, which further illuminates the analogy with similar phenomena in fusion plasmas and free electron laser physics.
机译：我们提出一个自洽的理论框架合唱波励磁,它描述了惠斯勒波动频谱的进化suprathermal电子分布函数。是Dyson-like方程的形式,然后导致进化方程非线性波动增长和频移。这种方法使我们能够分析推导第一次完全相同的表达式合唱啁啾率最初提议Vomvoridis et al。(1982)。显示对应于最大化的波粒子能量交换,每个人波属于惠斯勒波包以小非线性频移。我们还表明,不同的解释合唱鸣叫提出了文学出版有一致的和解中吗目前的理论框架,进一步照亮了类比和类似的现象聚变等离子体物理学和自由电子激光。

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    《Journal of Geophysical Research, A. Space Physics: JGR》 |2022年第2期|2021JA029760-1-2021JA029760-25|共25页
  • 作者

    F. Zonca; X. Tao; L. Chen;

  • 作者单位

    Center for Nonlinear Plasma Science and C.R. ENEA Frascati, Frascati, Italy;

    CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei, China;

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