...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Whistler Instability Driven by Electron Thermal Ring Distribution With Magnetospheric Application
【24h】

Whistler Instability Driven by Electron Thermal Ring Distribution With Magnetospheric Application

机译：惠斯勒热不稳定性由电子环分布与磁性层的应用程序

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The loss cone electron distribution function can be unstable to the excitation of whistler instability, which can be effective in pitch angle diffusion, thus rapidly filling up the loss cone and removing the free energy source. The present paper carries out a combined quasi-linear analysis and one-dimensional particle-in-cell simulation in order to investigate the dynamical consequences of the excitation of whistler instability. Thermal ring distribution can be considered as a simple substitution for the actual loss cone distribution. It is found according to both the reduced quasi-linear theory and the particle-in-cell simulation that while the whistler instability is effective in pitch angle diffusion of the initial loss cone distribution, the complete isotropization is not achieved such that substantial loss cone persists in the saturation stage. This finding may explain the fundamental question of why weak loss cone feature persists in the magnetosphere and, more importantly, why charged particles trapped in dipole field do not steadily undergo pitch angle scattering and be lost eventually.
机译：损失锥电子分布函数不稳定的激发惠斯勒不稳定,可以有效地推销角扩散,从而迅速填满了损失锥和删除免费能源。本文进行准线性相结合分析和一维particle-in-cell为了研究动态模拟惠斯勒的激励的后果不稳定。作为一个简单的替换的实际损失锥分布。根据准线性理论和particle-in-cell模拟,虽然惠斯勒不稳定性是有效的角扩散锥最初的损失分布,完整的isotropization不是取得这样实质性损失锥依然存在在饱和阶段。为什么弱损失锥的基本问题功能存在的磁气圈,更多重要的是,为什么被困在带电粒子偶极子场不稳定进行螺距角散射和最终丢失。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号