Precision spectroscopy of exotic nuclei

奇异核的精密光谱

• 批准号: SAPIN-2018-00023
• 负责人: Grinyer, Gwen
• 金额: $ 8.67万
• 依托单位: University of Regina
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=762475
• 关键词: Precision; spectroscopy; exotic; nuclei

My research uses beams of short-lived radioisotopes to study the atomic nucleus. Nuclei furthest from stability have often revealed spectacular new phenomena such as exotic structures and rare modes of radioactive decay. Understanding the fundamental forces between nucleons and how they evolve towards the most exotic nuclei are essential for attempting to explain the observed abundances of the elements in our universe and identifying the astrophysical sites where these nucleosynthesis processes may occur. Their study is crucial for guiding the development of theoretical nucleosynthesis and structure models and to improve their reliability in areas of the nuclear chart that cannot be accessed experimentally. The evolution of the nuclear force towards the extremes, how the elements are formed in the universe and the nature of physics at the electroweak scale are fundamental questions that have been identified in the Canadian subatomic physics long-range plan (2017-2021). Studies of the most exotic nuclei pose significant experimental challenges that are continually being addressed through upgrades and construction of large-scale rare-isotope beam facilities combined with the development of highly efficient and state-of-the-art detection systems. My research uses a variety of experimental techniques including direct and resonant nuclear reactions, precision nuclear decay studies and high-resolution gamma-ray spectroscopy to determine the properties of key nuclei that offer the best possible constraints for theoretical models. My experiments are conducted primarily at the TRIUMF facility in Canada and the Grand Accélérateur National d'Ions Lourds (GANIL) in France. I am presently the spokesperson for three experiments that have already been approved using existing infrastructure or infrastructure that is presently being developed from already secured external funding. I am the spokesperson and principal investigator of the active target and time projection chamber (ACTAR TPC), a novel detector development project that was funded by a 5-year/1.29M€ grant awarded by the European Research Council (ERC). First experiments with ACTAR TPC will begin in 2018 and will continue throughout the course of this research grant. This research grant will ensure the successful creation of my research program and provide the necessary support to my group by providing salaries for undergraduate summer research students, graduate students (Masters and Doctoral) and a postdoctoral fellow at the University of Regina. Travel funds for the group to be able participate in these experiments and present their results at national and international conferences and workshops are also included in the request.

我的研究使用短寿命放射性同位素束来研究原子核。 离稳定性最远的原子核往往揭示出壮观的新现象，如奇异的结构和罕见的放射性衰变模式。理解核子之间的基本力以及它们如何向最奇异的核演化，对于试图解释我们宇宙中观察到的元素丰度以及确定这些核合成过程可能发生的天体物理学地点至关重要。 他们的研究对于指导理论核合成和结构模型的发展以及提高它们在实验无法访问的核图表领域的可靠性至关重要。 核力向极端的演化、元素如何在宇宙中形成以及电弱尺度下的物理性质是加拿大亚原子物理学长期计划（2017-2021年）中确定的基本问题。对最奇特的核的研究提出了重大的实验挑战，这些挑战正在通过升级和建造大型稀有同位素束设施以及开发高效和最先进的探测系统来不断解决。 我的研究使用了各种实验技术，包括直接和共振核反应，精确的核衰变研究和高分辨率伽马射线光谱学，以确定关键核的性质，为理论模型提供最佳的约束条件。 我的实验主要是在加拿大的TRIUMF设施和法国的Grand Accélérateur National d 'Ions Lourds（GANIL）进行的。 我目前是三个实验的发言人，这些实验已经获得批准，使用现有的基础设施或目前正在从已经获得的外部资金中开发的基础设施。 我是主动目标和时间投影室（ACTAR TPC）的发言人和首席研究员，这是一个由欧洲研究理事会（ERC）授予的5年/129万欧元资助的新型探测器开发项目。 ACTAR TPC的首次实验将于2018年开始，并将在整个研究资助期间继续进行。这项研究补助金将确保我的研究计划的成功创建，并通过为本科夏季研究生，研究生（硕士和博士）和里贾纳大学的博士后研究员提供工资，为我的团队提供必要的支持。请求中还包括了该小组参加这些试验并在国家和国际会议及讲习班上介绍其结果所需的旅费。