"Precision mass measurements of short-lived isotopes for nuclear structure, nuclear astrophysics, and tests of fundamental symmetries"

“用于核结构、核天体物理学和基本对称性测试的短寿命同位素的精确质量测量”

• 批准号: 327743-2012
• 负责人: Dilling, Jens
• 金额: $ 21.71万
• 依托单位: TRIUMF
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Project
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=527096
• 关键词: Precision; mass; measurements; short; lived

The mass of the atomic nucleus is one of the most fundamental properties of the atomic many body systems. Precise knowledge of masses provides for testing and refining of advanced nuclear theory and models, and stimulates their further improvements. Masses are key ingredient in the tests of weak interaction studies, in nuclear beta-decay, and for sensitive tests of nuclear structure at the extremes. Moreover, in the field of nuclear astro-physics, atomic masses are needed for the understanding of the synthesis of the elements beyond iron in the universe. There has been substantial effort to determine masses accurate and precise for many years, and with the advent of coupling ion traps to radioactive beam (RIB) facilities, the field has been revolutionized. By now most RIB facilities have ion-trap based mass measurement systems. One of the most advanced facilities for mass measurements is TITAN (TRIUMF's Ion Trap for Atomic and Nuclear science).

原子核的质量是原子多体系统最基本的性质之一。对质量的精确认识为检验和完善先进的核理论和模型提供了条件，并促进了它们的进一步改进。质量是弱相互作用研究测试、核衰变测试和极端情况下核结构敏感测试的关键因素。此外，在核天体物理学领域，原子质量对于理解宇宙中铁以外元素的合成是需要的。多年来，人们一直在努力精确地确定质量，随着放射性束流耦合离子阱（RIB）设备的出现，该领域发生了革命性的变化。到目前为止，大多数RIB设施都有基于离子阱的质量测量系统。最先进的质量测量设备之一是TITAN （TRIUMF的原子和核科学离子阱）。