CAREER: Ground State Magnetic Moments of Short-lived Nuclei Using Beta-NMR Spectroscopy

职业：使用 β-NMR 光谱法研究短寿命原子核的基态磁矩

• 批准号: 9983810
• 负责人: Paul Mantica
• 金额: $ 21万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-01 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9983810&HistoricalAwards=false
• 关键词: CAREER; Ground; State; Magnetic; Moments

The magnetic dipole moments of short-lived radioisotopes near the proton drip-line will be measured to explore the limit at which protons and neutrons can be treated as identical particles in the bound nucleus. The experimentswill be performed at the National Superconducting Cyclotron Laboratory atMichigan State University. The desired radioactive nuclei will be producedusing the fragmentation of intermediate-energy heavy-ion beams provided by the Coupled K500-K1200 Cyclotron Facility and selected from other species using the new A1900 fragment separator. The method of nuclear magnetic resonance on beta-emitting nuclei will be employed to deduce the ground state magnetic moments of very light magnesium and silicon isotopes. A method to directly measure the spin of the nuclear ground state will also be developed usingnuclear magnetic resonance and overtone spectroscopy. The state-of-the-art research facilities at the National Superconducting Cyclotron Laboratory provide a unique arena to advance the nuclear chemistry education of undergraduate, graduate, and postdoctoral students. The environment at the university-based cyclotron facility allows for a hands-on training experience for students at all levels. To bring practical nuclearscience experience to the classroon, a new junior/senior level chemistry class will be developed at Michigan State University. This course will provide students with a background in fundamental nuclear process and radiation detectiontechniques. Students will then apply this new knowledge to understand both cutting edge nuclear science research as well as current events having tiesto nuclear science.

测量质子滴线附近短寿命放射性同位素的磁偶极矩，以探索质子和中子在束缚核中可以被视为相同粒子的极限。 实验将在密歇根州立大学的国家超导回旋加速器实验室进行。 所需的放射性核将使用耦合K500-K1200回旋加速器设施提供的中能重离子束的碎裂产生，并使用新的A1900碎片分离器从其他种类中选择。 将采用β发射核的核磁共振方法来推导极轻镁和硅同位素的基态磁矩。 利用核磁共振和泛音光谱学，还将发展一种直接测量核基态自旋的方法。国家超导回旋加速器实验室最先进的研究设施提供了一个独特的竞技场，以推进本科生，研究生和博士后的核化学教育。 基于大学的回旋加速器设施的环境允许为各级学生提供实践培训体验。 为了给课堂带来实际的核科学经验，密歇根州立大学将开设一个新的初级/高级化学班。 本课程将为学生提供基本核过程和辐射探测技术的背景知识。 然后，学生将应用这些新知识来了解前沿的核科学研究以及与核科学有关的时事。