Quasilinear theory of general electromagnetic fluctuations including discrete particle effects for magnetized plasmas: General analysis
Quasilinear theory of general electromagnetic fluctuations including discrete particle effects for magnetized plasmas: General analysis
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DOI：
10.1063/5.0104709
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发表时间：
2022-09
影响因子：
2.2
通讯作者：
R. Schlickeiser;P. Yoon
中科院分区：
文献类型：
--
作者：
R. Schlickeiser;P. Yoon
本文导出了磁化等离子体中回旋相位平均等离子体粒子分布函数的一般准线性Fokker-Planck动力学方程，它对粒子的能量和电磁涨落的频率不作限制，避免了常采用的电磁相互作用的库仑近似。离散粒子效应的加入打破了非线性动力学等离子体理论分为测试粒子和测试涨落近似的二分法，因为它提供了非集体和集体电磁涨落谱的等离子体粒子分布函数的表达式。准线性方法的有效性内，由此产生的全准线性输运方程可以被视为一个决定性的非线性方程的等离子体粒子分布函数的时间演化。
The general quasilinear Fokker–Planck kinetic equation for the gyrophase-averaged plasma particle distribution functions in magnetized plasmas is derived, making no restrictions on the energy of the particles and on the frequency of the electromagnetic fluctuations and avoiding the often made Coulomb approximation of the electromagnetic interactions. The inclusion of discrete particle effects breaks the dichotomy of nonlinear kinetic plasma theory divided into the test particle and the test fluctuation approximation because it provides expression of both the non-collective and collective electromagnetic fluctuation spectra in terms of the plasma particle distribution functions. Within the validity of the quasilinear approach, the resulting full quasilinear transport equation can be regarded as a determining nonlinear equation for the time evolution of the plasma particle distribution functions.