Electromagnetic cyclotron instabilities in bi-Kappa distributed plasmas: A quasilinear approach
Electromagnetic cyclotron instabilities in bi-Kappa distributed plasmas: A quasilinear approach
复制标题
DOI：
10.1063/1.4979903
复制
发表时间：
2017-04-01
影响因子：
2.2
通讯作者：
Eliasson, B.
中科院分区：
文献类型：
--
作者：
Lazar, M.;Yoon, P. H.;Eliasson, B.
在太阳风和行星磁层中遇到的各向异性双卡帕分布等离子体易受各种动力学不稳定性的影响，包括由垂直温度T-垂直于> T-平行于（其中平行于，垂直于表示相对于平均磁场的方向）驱动的回旋不稳定性。这些不稳定性在过去已经被广泛研究，主要限于线性稳定性分析。关于它们的准线性（弱非线性）发展，已经通过使用PIC和Vlasov求解器的数值模拟揭示了一些见解。本文提出了一种自洽的分析方法，它提供了电子和质子回旋不稳定性的各向异性温度以及波能量密度的准线性时间演化的扩展图片。出版社：AIP Publishing
Anisotropic bi-Kappa distributed plasmas, as encountered in the solar wind and planetary magnetospheres, are susceptible to a variety of kinetic instabilities including the cyclotron instabilities driven by an excess of perpendicular temperature T-perpendicular to > T-parallel to (where parallel to, perpendicular to denote directions relative to the mean magnetic field). These instabilities have been extensively investigated in the past, mainly limiting to a linear stability analysis. About their quasilinear (weakly nonlinear) development, some insights have been revealed by numerical simulations using PIC and Vlasov solvers. This paper presents a self-consistent analytical approach, which provides for both the electron and proton cyclotron instabilities an extended picture of the quasilinear time evolution of the anisotropic temperatures as well as the wave energy densities. Published by AIP Publishing.