CAREER: Understanding Radiation Belt Electron Fast, Deep Injections in the Inner Magnetosphere

职业：了解辐射带电子在内磁层的快速、深层注入

• 批准号: 2338125
• 负责人: Hong Zhao
• 金额: $ 68.35万
• 依托单位: Auburn University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-02-01 至 2029-01-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2338125&HistoricalAwards=false
• 关键词: CAREER; Understanding; Radiation; Belt; Electron

This CAREER project focuses on Earth’s radiation belts, which are populated with energetic electrons and present a hazardous radiation environment for spacecraft operating within. Understanding the dynamics of radiation belt electrons is of scientific interest and practical need. Energetic electron deep injection is believed to be the dominant source of the inner belt; however, the mechanism causing such deep injections is still unclear. This project aims to establish an integrated program of research and education centered on understanding energetic electron fast, deep injections and space radiation environment and increasing the involvement of students from historically underrepresented groups in space physics. This project will support an early-career female faculty member in research, outreach, and education efforts and train graduate and undergraduate students in both research and education activities. The education component involves support for various outreach programs targeted at 6-12th grade students from underrepresented groups using an interactive and adaptive learning module, redesigning a space physics course using evidence-based scientific teaching strategies, and mentoring undergraduate and graduate students in both research and education activities. Together, these activities will engage students from 6th grade to graduate level, especially female students and those from historically underrepresented groups in STEM, in inspiring learning experiences in space physics and positively impact the STEM pipeline. The overarching research goal of this project is to systematically investigate the characteristics of radiation belt electron (100s of keV) fast, deep injections in the inner magnetosphere and quantify the role of large-scale, quasi-static electric fields on these injections. The integrated education goal is to improve the STEM pipeline by engaging students from historically underrepresented groups in inspiring learning experiences in space physics. Three objectives to be addressed include: 1) Investigate the characteristics of 100s of keV electron fast, deep injections and their relation to the solar wind/geomagnetic conditions and large-scale, quasi-static electric fields using multispacecraft observations; 2) Quantify the role of large-scale electric fields in 100s of keV electron fast, deep injections using event-specific modeling; and 3) Develop an interactive and adaptive learning module on space radiation environment and space weather impacts to disseminate via outreach programs targeting 6-12th grade students from historically underrepresented groups and integrate into an undergraduate/graduate course redesigned using evidence-based scientific teaching strategies. These objectives will be achieved through multispacecraft observations of energetic electrons and electric fields, event-specific modeling, and developing a learning module on space radiation environment for various outreach and educational activities. The successful completion of this project will significantly contribute to our understanding of the inner radiation belt formation, promote the long-neglected but critical role of quasi-static electric fields in radiation belt dynamics, and positively impact the STEM pipeline.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这个职业项目的重点是地球的辐射带，这些辐射带有能量电子设备，并为内部运行的航天器提供了危险的辐射环境。了解辐射带电子的动力学是有科学利益和实际需求的。据信能量电子深入注入是内带的主要来源。但是，引起如此深刻注射的机制仍不清楚。该项目旨在建立一个集成的研究和教育计划，该计划旨在了解能源电子快速，深层注射和太空辐射环境，并增加来自历史上代表性不足的太空物理学的学生的参与。该项目将支持研究，外展和教育工作的早期女教师，并在研究和教育活动中培训研究生和本科生。该教育组成部分涉及对来自代表性不足的小组的6至12年级学生的各种外展计划的支持，使用互动和自适应学习模块，使用基于证据的科学教学策略重新设计了太空物理课程，以及在研究和教育活动中的心理本科生和研究生。这些活动将共同吸引六年级到研究生水平的学生，尤其是女学生和历史上代表性不足的STEM的学生，激发了太空物理学的学习经验，并对STEM管道产生了积极影响。该项目的总体研究目标是系统地研究内部磁层中快速，深层注射的辐射带电子的特征，并量化大型，准静态电场在这些注射中的作用。综合的教育目标是通过让历史上代表性不足的群体的学生参与启发太空物理学的学习经验，从而改善STEM管道。要解决的三个目标包括：1）研究使用多丙烯酸观测值的100 keV电子快速，深层注射及其与太阳风/地磁条件的关系以及它们与太阳风/地磁条件的关系以及大规模的准静电电场； 2）使用特定于事件的建模量化大规模电场在100 keV电子快速，深层注射中的作用； 3）在太空辐射环境和太空天气影响上开发了一个交互式和自适应的学习模块，以通过针对6至12年级的学生的宣传计划从历史上代表性不足的群体中进行传播，并使用基于证据的科学教学策略重新设计了本科/研究生课程。这些目标将通过对能量电子和电场，事件特异性建模和开发学习学习的成功完成该项目的成功完成将有助于我们对内部辐射皮带的形成的理解，促进长期以来的辐射领域的理解，并促进准静态电场在辐射动力学中的统计范围，并反映出态度的启动，并促进了我们对内部辐射的重要作用。使用基金会的智力优点和更广泛的影响审查标准通过评估来支持。