Investigation ofβ—‑decay half‑life and delayed neutron emission with uncertainty analysis

作     者：Yu‑Feng Gao Bo‑Shuai Cai Cen‑Xi Yuan Yu-Feng Gao;Bo-Shuai Cai;Cen-Xi Yuan

作者机构：Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China School of Nuclear Science and TechnologyUniversity of Chinese Academy of SciencesBeijing 100049China Sino‑French Institute of Nuclear Engineering and TechnologySun Yat-Sen UniversityZhuhai 519082China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2023年第34卷第1期

页      面：111-123页

核心收录：

学科分类：07[理学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 0703[理学-化学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the Guangdong Major Project of Basic and Applied Basic Research(No.2021B0301030006) computational resources from Sun Yat-Sen University and the National Supercomputer Center in Guangzhou 

主　　题：Neutron-rich nucleus -delayed neutron emissions Bootstrap method 

摘      要：β-decay half-life and β-delayed neutron emission(βn) are of great importance in the development of basic science and industrial applications, such as nuclear physics and nuclear energy, where β--decay plays an important role. Many theoretical models have been proposed to describe β-decay half-lives, whereas the systematic study of βn is still rare. This study aimed to investigate β--decay half-lives and βn probabilities through analytical formulas and by comparing them with experimental data. Analytical formulas for β--decay properties have been proposed by considering prominent factors, that is, decay energy,odevity, and the shell effect. The bootstrap method was used to simultaneously evaluate the total uncertainty on calculations,which was composed of statistic and systematic uncertainties. β--decay half-lives, βn probabilities, and the corresponding uncertainties were evaluated for the neutron-rich region. The experimental half-lives were well reproduced. Additional predictions are also presented with theoretical uncertainties, which helps to better understand the disparity between the experimental and theoretical results.