Computer Simulation Study on Nonlinear Response of Ionospheric and Magnetospheric Plasmas to Artificial Disturbances

为了解释活动空间实验的结果，并深入分析它们的机制，我们开发了我们的电磁粒子模拟程序(名为Kempo；京都大学EM粒子程序)的修订版，并由此进行了几次计算机实验。改进的Kempo具有处理开放的外部边界以及处理嵌入在模拟盒中的人造物体的内部边界的能力，研究了以下主题：1.由于与束前端的环境等离子体的相互作用而导致的电子束延迟；束和环境电子的加热；部分束和环境电子的加速，直至能量高于注入能量。长绳系航天飞机和卫星系统中与束流注入有关的闭合电流回路引起的LHR和UHR波的激发3。卫星与高速稀薄等离子体相互作用

In order to interpret the results of Active Space Experiments, and to analyze their mechanisms in depth we developed a revised versin of our electromagnetic particle simulation code (named KEMPO; Kyoto university EM Particle cOde) and thereby performed several computer experiments. The revised KEMPO has a capability of handling open outer boundaries as well as of treating internal boundaries of an artificial body imbeded in the simulation box,The following subjects were studied:1. Electron beam retardation due to the interaction with the ambient plasma at the front of the beam; heating of both beam and ambient electrons; acceleration of a part of beam and ambient electrons up to an energy higher than the injection energy.2. excitation of LHR and UHR waves due to a closed current loop associated with a beam injection in the long tethered Shuttle and Satellite System3. Satellite-High Speed Dilute Plasma Interaction