Transverse Acceleration of Ionospheric Ions in the Auroral Zone

本项目将对地球电离层和磁层的微中尺度离子演化现象进行系统的理论研究。空间等离子体研究的重要问题将在未来几年走向全球性。原位观测正在成为多航天器的范围，理论模型正被迫面对非定域和多尺度相互作用的问题。研究人员遇到微观过程，如波粒相互作用和与大电场和磁场有关的宏观效应，其中不均匀性和流动是重要的。本研究旨在了解发生在微观和中尺度上的带电粒子的能量、扩散和输运现象。具体来说，PI将继续研究极光离子加速问题、逆流电子的产生、等离子体湍流的非局域产生、传播和饱和、中尺度共振波粒相互作用、模式转换和模式-模式耦合过程。

This project will launch a systematic theoretical investigation of micro-mesoscale ion evolutionary phenomena in the Earth's ionosphere and magnetosphere. Important space plasma research problems in coming years will be addressed toward global issues. In-situ observations are becoming multi-spacecraft in scope, and theoretical models are being forced to confront issues of nonlocality and multiscale interactions. Investigators encounter microscopic processes, such as wave-particle interactions and macroscopic effects connected with large electric and magnetic fields, where inhomogeneities and flow are important. This research has been aimed at understanding charged particle energization, diffusion and transport phenomena occurring at both micro- and mesoscales. Specifically, the PI will continue his studies of the auroral ion acceleration problem, the production of counterstreaming electrons, the nonlocal generation, propagation and saturation of plasma turbulence, mesoscale resonant wave-particle interactions, and mode conversion and mode-mode coupling processes.