Simulation and Theory of Electron Holes and Double Layers Observed in the Magnetosphere, Ionosphere, and Solar Wind

磁层、电离层和太阳风中观测到的电子空穴和双层的模拟和理论

• 批准号: 0714621
• 负责人: David Newman
• 金额: $ 34.58万
• 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: 2007
• 资助国家: 美国
• 起止时间: 2007-09-15 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0714621&HistoricalAwards=false
• 关键词: Simulation; Theory; Electron; Holes; Double

This project will address the issue of electron phase space holes (EH) in space plasmas. The project has three specific goals: (1) extend the work previously done on the creation of EH by auroral double layers to other regions of space where the magnetic field is relatively weak, (2) examine mechanisms that would produce weak EH when double layers are not present, and (3) determine the electron distribution functions for the untrapped electron population associated with weak electron holes. The project will develop a Vlasov simulation code for 2-D in space and 3-D in velocity. A simplified 1-D Vlasov simulation tool with an easy to use graphical interface will also be produced as an educational tool for students learning about plasma physics and the Vlasov equation.

该项目将处理空间等离子体中的电子相位空间空穴问题。 该项目有三个具体目标：（1）将以前通过极光双层创造EH的工作扩展到磁场相对较弱的其他空间区域，（2）检查当双层不存在时产生弱EH的机制，以及（3）确定与弱电子空穴相关的未捕获电子人口的电子分布函数。 该项目将开发一个用于二维空间和三维速度的Vlasov模拟代码。 一个简化的一维弗拉索夫模拟工具，易于使用的图形界面也将作为一个教育工具，为学生学习等离子体物理和弗拉索夫方程。