Exploring the uncertainties in theoretical predictions of nuclear β-decay half-lives

作     者：M.Shi J.Y.Fang Z.M.Niu 仕敏;方基宇;牛中明

作者机构：School of Mathematics and PhysicsAnhui Jianzhu UniversityHefei 230601China Key Laboratory of Architectural Acoustic Environment of Anhui Higher Education InstitutesHefei 230601China Key Laboratory of Advanced Electronic Materials and DevicesAnhui Jianzhu UniversityHefei230601China School of Physics and Materials ScienceAnhui UniversityHefei 230601China Institute of Physical Science and Information TechnologyAnhui UniversityHefei 230601China 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2021年第45卷第4期

页      面：273-278页

核心收录：

学科分类：08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 

基　　金：Partly supported by the National Natural Science Foundation of China under(11805004,11875070) the Key Research Foundation of Education Ministry of Anhui Province(KJ2020A0485) the Open fund for Discipline Construction,Institute of Physical Science and Information Technology,Anhui University 

主　　题：βdecay nuclear mass r process 

摘      要：Nuclear β-decay half-lives are predicted based on an empirical formula and the mass predictions from various nuclear *** is found that the empirical formula can reproduce the nuclearβ-decay half-lives well,especially for short-lived nuclei with T_(1/2)*** theoretical half-life uncertainties fromβ-decay energies and the parameters of the empirical formula are further *** is found that the uncertainties of the half-lives are relatively large for heavy nuclei and nuclei near the neutron-drip *** nuclei on the r-process path,the uncertainties for those with N=126 are about one order of magnitude,which are much larger than the uncertainties for those with N=50 and ***,theoretical uncertainties from the parameters of the empirical formula are relatively small for the nuclei on the r-process path,which indicates that the empirical formula is very suitable for predicting theβ-decay half-lives in r-process simulations.