RUI: An Investigation of Chirality and Signature Inversion in 130 and 160 Mass Regions

RUI：130 和 160 个质量区域的手性和信号反转的调查

• 批准号: 0204811
• 负责人: Mirela Fetea
• 金额: $ 8.3万
• 依托单位: University of Richmond
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0204811&HistoricalAwards=false
• 关键词: RUI; Investigation; Chirality; Signature; Inversion

0204811FeteaCurrent understanding of both nuclear structure and nucleo-synthesis is largely based on what is known of the properties of stable and long-lived near-stable nuclei. An unexplored landscape containing more than 90% of all expected bound nuclear systems, a region where many new nuclear phenomena are anticipated still needs to be explored. Early experiments on unstable nuclei have already revealed surprises. Such phenomena as halo nuclei suggest that some of the cherished concepts of nuclear structure may apply only to a set of relatively stable nuclei.This project will theoretically study, the nuclei in the and 160 mass regions. These nuclei have shown a number of features that challenge our understanding of nuclear structure, of particular interest being the signature splitting/inversion and "chiral twin bands" phenomena. Calculations in various model frameworks (particle rotor model including both a residual pn interaction and a deformation, total routhian surface calculations, cranking shell and tilted axis cranking model) will be performed to elucidate the underlying physical properties responsible for the signature splitting/inversion and "chiral twin bands" phenomena.The involvement of undergraduate students in this research project will enhance students' interest in physics and provide a training environment for their preparation for mainstream study.

0204811目前对核结构和核合成的理解主要基于对稳定和长寿命近稳定核的性质的了解。一个未探索的景观包含超过90%的所有预期的束缚核系统，一个地区，许多新的核现象的预期仍然需要探索。早期对不稳定原子核的实验已经揭示了令人惊讶的结果。晕核等现象表明，一些珍贵的核结构概念可能只适用于一组相对稳定的核。本项目将从理论上研究，和160质量区的核。这些原子核已经显示出许多挑战我们对原子核结构理解的特征，特别令人感兴趣的是签名分裂/反转和“手征孪带”现象。在各种模型框架中的计算（粒子转子模型，包括剩余pn相互作用和 将透过实验研究，探讨物理学中的物理现象（如形变、全Routhian面计算、推转壳及斜轴推转模型），以阐明导致信号分裂/反转及“手征孪带”现象的物理性质。本科生参与这项研究计划，可提高学生对物理的兴趣，并提供一个训练环境，为日后的主流研究作好准备。