Study of Solar Energetic Electrons

太阳能高能电子的研究

• 批准号: 1242331
• 负责人: Peter Yoon
• 金额: $ 30万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-12-15 至 2016-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1242331&HistoricalAwards=false
• 关键词: Study; Solar; Energetic; Electrons

The Principal Investigator (PI) will study the combined effects of self-generated wave dynamics and local Coulomb collisional dynamics on electrons in the solar wind, while focusing on local acceleration of electrons to suprathermal velocities by self-generated enhanced electrostatic fluctuations. The PI's objective is to determine the physical origin of the so-called 'kappa' velocity distribution function (VDF) associated with the solar wind electrons. Since this task has not been attempted before, the PI expects these results to shed light on electron dynamics in the solar wind, and to help experimenters in interpreting their existing data.The PI notes that the turbulent and nonlinear plasma processes to be studied here affect charged particle acceleration in many different laboratory and astrophysical environments, and that this effort will therefore have wider interdisciplinary impact. The PI's numerical results will be shared with the community through workshops and publications. This project will also contribute to the education and training of a young postdoctoral scientist.

首席研究员将研究自生波动力学和局部库仑碰撞动力学对太阳风中电子的综合影响，同时侧重于自生增强静电波动对电子局部加速到超热速度的影响。PI的目标是确定与太阳风电子相关的所谓“kappa”速度分布函数（VDF）的物理起源。由于这项任务以前没有尝试过，PI希望这些结果能阐明太阳风中的电子动力学，并帮助实验人员解释他们现有的数据。PI指出，这里要研究的湍流和非线性等离子体过程会影响许多不同实验室和天体物理环境中的带电粒子加速，因此这项工作将产生更广泛的跨学科影响。PI的数值结果将通过研讨会和出版物与社区分享。 该项目还将有助于教育和培训一名年轻的博士后科学家。