相对论准粒子无规相位近似对原子核β衰变寿命的研究  

Nuclear β-decay half-lives based on the relativistic quasiparticle random phase approximation

作　　者：王章银[1] 牛中明[1] 

机构地区：[1]安徽大学物理与材料科学学院,合肥230601

出　　处：《中国科学：物理学、力学、天文学》2016年第1期179-188,共10页Scientia Sinica Physica,Mechanica & Astronomica

基　　金：国家自然科学基金资助项目(批准号:11205004)

摘　　要：原子核β衰变寿命是原子核的重要性质之一,对核物理、核天体物理以及粒子物理的研究都具有重要影响.本文简要回顾了近年来相对论准粒子无规相位近似(QRPA)对原子核β衰变寿命的研究进展.首先介绍了研究β衰变寿命的重要性以及计算β衰变寿命的理论模型,随后给出了计算β衰变寿命的Fermi理论.然后,详细介绍了相对论QRPA研究原子核β衰变寿命的最新进展,特别关注于同位旋标量道粒子-粒子剩余相互作用对研究原子核β衰变寿命的影响,并介绍了相对论QRPA预言的β衰变寿命对快中子俘获过程丰度分布的影响.最后给出总结与展望.Nuclear β-decay half-life is an important property of nucleus. It plays important roles in nuclear physics, nuclear astro- physics, and particle physics. This article briefly reviews recent research progress on nuclear β-decay half-lives based on the relativistic quasiparticle random phase approximation （QRPA）. First, the importance of β-decay half-lives and the the- oretical model used to predict β -decay half-lives are introduced. Then we will present the famous Fermi theory of β decay. The research progress on nuclear β-decay half-lives based on the relativistic quasiparticle random phase approximation is reviewed in detail and special attention is paid to the effects of the T = 0 proton-neutron pairing on the β-decay half- lives. The influence of β-decay half-lives calculated with relativistic QRPA on abundance distribution of the rapid-neutron capture process is given as well. Summary and perspective are presented finally.

关 键 词：β衰变寿命 无规相位近似 对相互作用 

分 类 号：O571.322[理学—粒子物理与原子核物理]