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: $ 5.68万
• 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: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=652489
• 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离稳定最远的原子核，经常揭示令人惊叹的新现象，例如奇异的结构和罕见的放射性衰变模式，以及它们如何向最奇异的方向演化。原子核对于解释我们宇宙中观测到的元素丰度和确定可能发生这些核合成过程的天体物理地点至关重要。它们的研究对于指导理论的发展至关重要。核合成和结构模型，并提高其在核图表中无法通过实验获得的区域的可靠性。核力向极端的演化、宇宙中元素的形成以及弱电尺度的物理性质都是基础。加拿大亚原子物理长期计划（2017-2021）中已确定的问题 ****** 对最奇异的原子核的研究提出了重大的实验挑战，这些挑战正在通过大规模的升级和建造不断得到解决。我的研究使用了各种实验技术，包括直接核反应和共振核反应、精确核衰变研究和高分辨率伽马射线光谱。确定为理论模型提供最佳约束的关键原子核的性质。我的实验主要在加拿大的 TRIUMF 设施和法国的 Grand Accélérateur National d'Ions Lourds (GANIL) 进行。目前，我是主动目标和时间投影室（ACTAR TPC）（一种新型探测器）的发言人和首席研究员，这三个实验已经使用现有基础设施或目前正在开发的基础设施获得批准。该开发项目由欧洲研究理事会 (ERC) 提供的 5 年/129 万欧元资助，首次使用 ACTR TPC 的实验将于 2018 年开始，并将在整个研究资助过程中持续进行 *****。 *这项研究补助金将确保我的研究计划的成功创建，并通过为里贾纳大学的本科生暑期研究生、研究生（硕士和博士）和博士后研究员提供工资，为我的团队提供必要的支持，以便该团队能够参与这些实验并在国家和国际会议和研讨会上展示其结果也包含在请求中。