Particle Motion and Plasma Configuration of OTD Magnetospheres

OTD 磁层的粒子运动和等离子体结构

• 批准号: 9310753
• 负责人: Tian-Sen Huang
• 金额: $ 3.5万
• 依托单位: Prairie View A & M University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-09-01 至 1995-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9310753&HistoricalAwards=false
• 关键词: Particle; Motion; Plasma; Configuration; OTD

9310753 Huang We propose to carry out a comprehensive investigation of the Uranian and Neptunian magnetospheres. The investigation includes the following aspects: (1) The guiding center motion of charged particles and the plasma bulk properties along a field line in the magnetospheres with large offset and tilted dipole (OTD) magnetic field; (2) The formation and configuration of the plasmaspheres at Uranus and Neptune; (3) The magnetospheric dynamics, especially the current systems and their effects on the mass and energy transports and the stability of the OTD magnetospheres; (4) The sources and transport processes of the plasma in the Uranian and Neptunian magnetospheres, The proposed studies will be developed on the basis of our previous work, the studies on the motion of chareged particles in the magnetospheres with spin axis aligned magnetic dipole field Huang et al., 1988 , the spatial variations of density and temperature along a magnetic field line in an anisotropic rotating magnetospheric plasma Huang and Birmingham, 1992 and the 3D description of magnetosphere in a OTD frame Huang and Sittler, 1993 . They will also be guided by observational data. The results of these studies would increase our understanding of the Uranian and Neptunian magnetospheres as well of the terrestrial magnetosphere. ***

9310753 黄 我们建议对天王星和海王星磁层进行全面考察。 研究内容包括以下几个方面：（1）大偏移倾斜偶极子（OTD）磁场的磁层中带电粒子中心运动的引导和沿场力线的等离子体体特性； (2) 天王星和海王星等离子层的形成和结构； (3) 磁层动力学，特别是电流系统及其对质量和能量传输以及OTD磁层稳定性的影响； （4）天王星和海王星磁层中等离子体的来源和传输过程，本研究将在我们前期工作的基础上展开，即自旋轴对齐磁偶极场磁层中带电粒子运动的研究Huang等，1988，各向异性旋转磁层中密度和温度沿磁场线的空间变化的研究 等离子 Huang 和伯明翰，1992 年以及 OTD 框架中磁层的 3D 描述 Huang 和 Sittler，1993 年。 他们还将以观测数据为指导。 这些研究的结果将增加我们对天王星和海王星磁层以及地球磁层的了解。 ***