Computer simulations of relativistic whistler-mode wave–particle interactions
Computer simulations of relativistic whistler-mode wave–particle interactions
复制标题
相对论哨声模式波粒相互作用的计算机模拟
DOI：
--
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
D. Summers
中科院分区：
文献类型：
--
作者：
Y. Omura;D. Summers
哨声波-电子相互作用是地球磁层和磁化行星辐射带的重要物理机制。从线性理论出发，得到了具有温度各向异性的相对论双麦克斯韦等离子体中R模（哨声模）电磁波增长率的解析结果。为了检验线性理论，一维自洽电磁粒子模拟与新开发的完全相对论代码进行。假设在均匀磁场中，各向同性冷电子和各向异性热电子的一个主要的背景成分的一个次要的组件。在热相对论电子的温度各向异性的驱动下，哨声模式波最初线性增长，然后非线性增长到发生饱和的水平。饱和发生由于共振电子的非线性捕获和准线性弛豫的温度各向异性的组合。第一波G…
Whistler-mode wave–electron interactions constitute an important physical mechanism in the Earth’s magnetosphere and the radiation belts of the magnetized planets. From linear theory, an analytical result for the growth rate of electromagnetic R-mode (whistler-mode) waves in a relativistic bi-Maxwellian plasma with given temperature anisotropy is obtained. In order to test the linear theory, a one-dimensional self-consistent electromagnetic particle simulation is performed with a newly developed fully relativistic code. A major background component of isotropic cold electrons and a minor component of anisotropic hot electrons in a uniform magnetic field are assumed. Driven by the temperature anisotropy of the hot relativistic electrons, the whistler-mode waves grow initially linearly, and then nonlinearly to a level at which saturation takes place. Saturation occurs due to a combination of nonlinear trapping of resonant electrons and quasilinear relaxation of the temperature anisotropy. The initial wave g...