Ultra-Low-Frequency Wave and Particle Dynamics in Magnetospheric Plasmas

磁层等离子体中的超低频波和粒子动力学

• 批准号: 9971529
• 负责人: Liu Chen
• 金额: $ 24.45万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-11-15 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9971529&HistoricalAwards=false
• 关键词: Ultra; Low; Frequency; Wave; Particle

This program will examine the interactions of ultra-low-frequency (ULF) waves with ions and electrons in the magnetosphere. This approach will be to use a hybrid simulation code to determine realistic equilibrium conditions. This would be followed by a study of the mechanisms which would generate ULF waves. The nonlinear coupling of different wave modes would be analyzed with respect to critical instability processes such as ballooning modes and the generation of turbulence. Finally, a new study will be initiated on the role of ion temperature gradients in transporting energy and momentum in magnetospheric plasmas.

这个项目将研究超低频(ULF)波与磁层中的离子和电子的相互作用。这种方法将使用混合模拟代码来确定现实的均衡条件。随后将对产生超低频波的机制进行研究。针对临界失稳过程，如气球模式和湍流的产生，分析了不同波模的非线性耦合。最后，将启动一项关于离子温度梯度在磁层等离子体中能量和动量传输中的作用的新研究。