E区电离层中流星产生的等离子体柱：场和扩散
Meteor generated plasma columns in E-region ionosphere: fields and diffusion
摘要：
流星体穿透地球大气层后，会在E区电离层留下密集等离子体的痕迹，在E区电离层中，电子被强烈磁化，而离子由于与中性粒子的频繁碰撞而被消磁。虽然自1950年代以来已收集了流星尾迹演变的雷达测量数据，并用于推断流星和大气的特性，但没有关于尾迹场和扩散的准确定量模型。本文描述了适用于大多数小流星的尾迹等离子体物理的理论和模拟。与以前的论文不同，我们的理论假设地磁场和等离子体尾迹之间有一个显着的角度，并包括尾迹和背景电离层等离子体之间的重要相互作用。这项研究提供了定量的等离子体密度和电场的空间分布和动力学知识。这将使流星和大气研究人员能够更准确地解释镜面和非镜面流星回波的雷达观测。
英文摘要：
A meteoroid penetrating the Earth's atmosphere leaves behind a trail of dense plasma in the E-region ionosphere, a region where electrons are strongly magnetized while ions are demagnetized due to their frequent collisions with neutrals. While radar measurements of meteor trail evolution have been collected and used to infer meteor and atmospheric properties since the 1950s, no accurate quantitative model of trail fields and diffusion exists. This paper describes a theory and simulations of trail plasma physics which applies to the majority of small meteors. Unlike earlier papers, our theory assumes a significant angle between the geomagnetic field and the plasma trail and includes the important interaction between the trail and the background ionospheric plasma. This study provides quantitative knowledge of the spatial distribution and dynamics of the plasma density and electric field. This should enable meteor and atmospheric researchers to more accurately interpret radar observations of specular and non-specular meteor echoes.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
