The Analysis and Simulation of Wave-Particle Interactions in the Auroral Acceleration Region

极光加速区波粒相互作用的分析与模拟

• 批准号: 8900583
• 负责人: Paul Kintner
• 金额: --
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-06-01 至 1990-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8900583&HistoricalAwards=false
• 关键词: Analysis; Simulation; Wave; Particle; Interactions

A study of acceleration processes of the auroral particles is proposed. The approach is theoretical, numerical using the data base from the VIKING satellite and sounding rockets. The auroral acceleration mechanisms are complex and no clear candidate has emerged from the past studies. This study will use new nonlinear parametric mechanisms in which Alfven wave decays into a sound wave and backscattered Alfven wave. A hybrid simulation code will be used. The simulation results should provide information on the weak double layers which evolved from parametric processes. Plasma wave data will be analyzed from the VIKING satellite and rocket data and will be interpreted in conjunction with the simulation results. This combined approach of data analysis, theory and simulation will provide information concerning the auroral acceleration mechanisms.

对极光粒子的加速过程进行了研究。这种方法是理论上的，使用海盗号卫星和探空火箭的数据库进行数值计算。极光加速的机制是复杂的，从过去的研究中还没有出现明确的候选者。这项研究将使用新的非线性参数机制，其中Alfven波衰减为声波和后向散射Alfven波。将使用混合模拟代码。模拟结果应提供从参数过程演化而来的弱双层的信息。等离子体波数据将根据海盗号卫星和火箭的数据进行分析，并将结合模拟结果进行解释。这种数据分析、理论和模拟相结合的方法将提供有关极光加速机制的信息。