Studies of Plasma Sheet Formation, Ion Beam Formation, Particle Energization, and Entry into the Geomagnetic Tail

等离子体片形成、离子束形成、粒子赋能和进入地磁尾的研究

• 批准号: 8918858
• 负责人: Donald Mitchell
• 金额: $ 38.91万
• 依托单位: Johns Hopkins University
• 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: 1990-03-01 至 1994-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8918858&HistoricalAwards=false
• 关键词: Studies; Plasma; Sheet; Formation; Ion

THis grant is focused on analyzing ISEE-1 and -2 MEPI energetic particle and LEPEDEA plasma data, along with UCLA magnetometer data, to characterize the particle energy spectrum throughout the plasma sheet and its adjoining regions, and to gain insight into the processes by which plasma and energy enter and leave the magnetotail. This program will concentrate on extending the spectral analysis into the adjacent regions, i.e. the low-latitude boundary layer, life, and mantle. It will also be examining plasma energization mechanisms in the tail current sheet during geomagnetic activity, the formation of ion and electron beams and energy transport in the plasma sheet and plasma sheet boundary layer, and the collapse of the tail field to a dipolar configuration when the cross-tail current disrupts.

这笔赠款的重点是分析ISEE-1和-2 MEPI高能粒子和LEPEDEA等离子体数据，以及加州大学洛杉矶分校的磁力仪数据，以表征整个等离子体片及其邻近区域的粒子能谱，并深入了解等离子体和能量进入和离开磁尾的过程。该计划将集中于将频谱分析扩展到邻近地区，即低纬边界层、LIFE和地幔。它还将研究地磁活动期间尾部电流片中的等离子体能化机制，离子和电子束的形成以及等离子体片和等离子体片边界层中的能量传输，以及当交叉尾部电流中断时尾部磁场坍塌到偶极构型。