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MPS-Ascend: Observation of the Positronium Plus Ion and Development of a Spin-Polarized Positron Beam for Angle-Resolved Positronium Emission Spectroscopy

MPS-Ascend：观察正电子加离子并开发用于角分辨正电子发射光谱的自旋偏振正电子束

基本信息

批准号：
2213812
负责人：
Gabriel Cecchini
金额：
$ 30万
依托单位：
Cecchini, Gabriel George
依托单位国家：
美国
项目类别：
Fellowship Award
财政年份：
2022
资助国家：
美国
起止时间：
2022-07-01 至 2025-06-30
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2213812&HistoricalAwards=false
关键词：
MPS Ascend Observation Positronium Plus

项目摘要

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2). Gabriel Cecchini is awarded an NSF Mathematical and Physical Sciences Ascending Postdoctoral Research Fellowship to conduct a program of research and activities related to broadening participation by groups underrepresented in STEM. This fellowship to Dr. Cecchini supports his research project entitled "MPS-Ascend: Observation of the Positronium Plus Ion and Development of a Spin-Polarized Positron Beam for Angle-Resolved Positronium Emission Spectroscopy", under the mentorship of a sponsoring scientist. The host institution for the fellowship is the University of California Riverside (UCR) and the sponsoring scientist is Dr. Allen Mills.Cecchini will pursue a research project to create and observe, for the first time, the positronium plus ion (Ps+). The existence of this ion was originally predicted in 1946 and has yet to be observed in the laboratory. As a pure lepton system, Ps+ could be used in tests of quantum electrodynamics (QED). In addition, improvements in the positron source will enable the development of a new angle-resolved positronium emission spectrometer (ARPsES). Cecchini will mentor students in the positron lab at UCR, which is both a Hispanic Serving Institution and an Asian American, Native American, and Pacific Islanders Serving Institution. He will work with local high school teachers and students and will participate in conferences and assistance programs geared to recruitment, retention, and graduation of members of groups traditionally underrepresented in STEM such as the American Association for the Advancement of Science (AAAS), the Alliance for Graduate Education and the Professoriate (AGEP), and the Inclusive Graduate Education Network (IGEN).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.

该奖项的全部或部分资金根据《2021 年美国救援计划法案》（公法 117-2）提供。 Gabriel Cecchini 被授予 NSF 数学和物理科学提升博士后研究奖学金，以开展一项与扩大 STEM 中代表性不足的群体的参与相关的研究和活动计划。 Cecchini 博士的这项奖学金支持他的研究项目“MPS-Ascend：观察正电子加离子并开发用于角分辨正电子发射光谱的自旋偏振正电子束”，该项目是在一位赞助科学家的指导下进行的。该奖学金的主办机构是加州大学河滨分校 (UCR)，赞助科学家是 Allen Mills 博士。Cecchini 将开展一个研究项目，首次创建和观察正电子正离子 (Ps+)。这种离子的存在最初是在 1946 年预测的，但尚未在实验室中观察到。 Ps+作为纯轻子系统，可用于量子电动力学（QED）测试。此外，正电子源的改进将有助于开发新型角分辨正电子发射光谱仪（ARPsES）。切基尼将指导加州大学河滨分校正电子实验室的学生，该实验室既是一个西班牙裔服务机构，也是一个亚裔美国人、美洲原住民和太平洋岛民服务机构。他将与当地高中教师和学生合作，并参加旨在招聘、保留和毕业 STEM 传统上代表性不足的团体成员的会议和援助计划，例如美国科学促进会 (AAAS)、研究生教育和教授联盟 (AGEP) 以及包容性研究生教育网络 (IGEN)。该奖项反映了 NSF 的法定使命，并被视为值得通过使用基金会的智力优点和更广泛的影响审查标准进行评估来支持。