定量化无碰撞等离子体中波粒相互作用的理论研究

在无碰撞等离子体中,波粒相互作用会引起电磁场与粒子之间能量转移,其结果之一是重塑粒子速度分布函数.因而,如何定量化波粒相互作用是日球层和天体等离子体研究中的一个基础问题.近年来,在定量化波粒相互作用问题的研究中,取得了很多重要成果.将主要介绍相关理论研究上的进展,特别是,将重点介绍新近提出的度量共振和非共振波粒相互作用的理论方法.还将介绍该方法在度量内日球层阿尔文模式波、质子束流不稳定性和电子热流不稳定性中波粒相互作用上的应用.

On Theoretical Study of Quantifying Wave-particle Interactions in Collisionless Plasmas

Wave-particle interactions can naturally result in energy transfer between electromagnetic fields and particles in collisionless plasmas, and these interactions can therefore reshape the particle velocity distribution function. How to quantify wave-particle interaction is one fundamental problem in the heliosphere and astrophysical plasma communities. Recently, there are many important findings related to the wave-particle interaction. This paper will report recent theoretical developments in the study of the wave-particle interactions. In particular, this paper will introduce a newly-developed theoretical method in quantifying both resonant and nonresonant wave-particle interactions. This paper will also introduce applications of quantifying wave-particle interactions for the Alfvén-mode wave, the proton beam instability, and the electron heat flux instability in the inner heliosphere.