WoU-MMA: Nuclear Physics at the Notre Dame Nuclear Science Laboratory Providing a Window on the Universe

WoU-MMA：圣母大学核科学实验室的核物理学提供了了解宇宙的窗口

• 批准号: 2011890
• 负责人: Daniel Bardayan
• 金额: $ 810万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2011890&HistoricalAwards=false
• 关键词: WoU; MMA; Nuclear; Physics; Notre; WoU; MMA; Nuclear; Physics; Notre

This award continues the research program of nine faculty members and their students in Nuclear Structure Physics and Nuclear Astrophysics at the University of Notre Dame. The program focuses on direct measurements of nuclear reaction and decay processes that determine the life of stars, the origin of the elements, and production of multi messengers that provide a Window on the Universe. This program addresses key nuclear processes that define the timescales of stellar evolution and explosion processes. Another component is the study of low energy fusion reactions during the last days of a stellar life prior to supernova explosion. The program also explores the nuclear structure effects that are guiding large scale nucleosynthesis processes. The research is performed primarily by using the accelerators of the Nuclear Science Laboratory (NSL) at the University of Notre Dame, which are uniquely designed to probe stellar reactions through experimental techniques. The experimental results expand our knowledge of the fundamental structure of the nucleus as a multi-body quantum system; they also provide new insight for the astrophysics community on the origin of the elements and the chemical evolution of the cosmos from the Big Bang to the present. The NSL is uniquely equipped for performing this kind of research in a university environment. The award will support the training of a large number of graduate (approximately 25) and undergraduate students (approximately 20) in experimental and theoretical techniques to be ready to join the nuclear workforce of the nation.The experimental program is based on the use of two accelerators at the NSL. Intense stable ion beams from the single ended 5U Pelletron are used for the direct study of low-energy capture and fusion reactions. Heavy ion beams are used to investigate reactions in the inverse kinematic technique using the St. GEORGE recoil separator. This separator is unique and serves as a blueprint for the design of the SECAR separator at FRIB. The FN tandem accelerator is used as a multi-purpose instrument. It is operated as a driver for the production of radioactive beams at the newly-expanded TriSol facility. These beams allow direct reaction measurements with the trapping of light radioactive particles at levels not possible at large national facilities. The FN also serves the accelerator mass spectrometry (AMS) program at the NSL, testing geological and cosmological samples for long-lived radioactivities. A large number of nuclear structure experiments are based on the operation of this machine using a variety of particle and gamma spectroscopy techniques. A smaller fraction of the program relies on the use of other national and international facilities to take advantage of higher energy and more exotic beams not available at the NSL.This award addresses and advances the goals of the Windows on the Universe Big Idea.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.

该奖项延续了巴黎圣母院的九名教职员工及其核结构物理学和核天体物理学的研究计划。该计划的重点是对核反应和衰减过程的直接测量，这些过程决定了恒星的寿命，元素的起源以及提供宇宙窗口的多使者的生产。该计划解决了定义恒星进化和爆炸过程的时间尺度的关键核过程。另一个组成部分是在超新星爆炸之前的恒星寿命中研究低能融合反应。该计划还探讨了指导大规模核合成过程的核结构效应。这项研究主要是使用巴黎圣母院的核科学实验室（NSL）的加速器进行的，巴黎圣母院的唯一设计旨在通过实验技术探测出色的反应。实验结果扩大了我们对核作为多体量子系统的基本结构的了解。他们还为天体物理学界提供了有关元素起源的新见解，以及从大爆炸到现在的宇宙的化学演变。 NSL具有在大学环境中进行此类研究的独特装备。该奖项将支持大量毕业生（约25名）和本科生（大约20个）实验和理论技术的培训，以准备加入国家的核员工。实验计划基于NSL的两个加速器。来自单端5U胶子的强稳定离子束用于直接研究低能量捕获和融合反应。重离子束用于使用圣乔治后坐力分离器进行反向运动学技术中的反应。该分离器是独一无二的，是用于frib的Secar分离器设计的蓝图。 FN串联加速器用作多功能仪器。它是在新近扩展的Trisol设施中生产放射性梁的驱动程序。这些光束允许在大型国家设施不可能的水平上捕获光放射性颗粒的直接反应测量。 FN还为NSL上的加速器质谱法（AMS）提供服务，测试地质和宇宙学样本的长期放射性。 大量核结构实验是基于使用多种粒子和伽马光谱技术的机器运行的。该计划的一小部分依靠使用其他国家和国际设施来利用NSL上无法获得的更高的能量和更多的异国情调。该奖项介绍并促进了宇宙大意上窗户的目标。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识优点和广泛的cristia criperia的评估来通过评估来进行评估。