Magnetotail Dynamics: Plasma Wave Turbulence and Particle Chaos

磁尾动力学：等离子体波湍流和粒子混沌

• 批准号: 9002447
• 负责人: Theodore Speiser
• 金额: $ 41.44万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-07-01 至 1993-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9002447&HistoricalAwards=false
• 关键词: Magnetotail; Dynamics; Plasma; Wave; Turbulence

Theoretical understanding and development of realistic models for the various physical processes that occur are required to understand how particles in the outer regions of the magnetosphere become energized and make their way into the polar regions to produce the aurora. This project is a continuation of theoretical and model development research to further study the chaotic properties of various magnetotail models and the application of these models to tail energization processes. The project is described in four main areas of research pertinent to the role of stochastic particle orbits in magnetotail dynamics and the correct time scale for collisionless resistivity. These include studies of the irreversible behavior of current sheets and neutral line fields, the stochasticity of particle orbits, the response of ensembles of charged particles, diffusion coefficients and their dependence on model parameters, all directed towards understanding the evolution of particle distributions from the plasma sheet boundary layer to the central plasma sheet. ***//

理论认识与现实发展 需要建立各种物理过程的模型 去了解宇宙外层的粒子 磁气圈变得充满能量并进入极地 产生极光的区域。 该项目是一个延续， 理论和模型开发研究，以进一步研究 各种磁尾模型的混沌特性和 这些模型的应用，以尾流处理。 的 项目描述了四个主要研究领域， 随机粒子轨道在磁尾动力学中作用 以及无碰撞电阻率的正确时间尺度。 这些 包括研究电流片的不可逆行为 中性线场，粒子轨道的随机性， 带电粒子系综的响应，扩散 系数及其对模型参数的依赖性，所有 旨在了解粒子的演化 从等离子体片边界层到中心的分布 等离子体片 ***//