Nuclear mass parabola and its applications  

作　　者：Junlong Tian Di Yuan Yunyi Cui Yun Huang Ning Wang 田俊龙;袁地;崔云怡;黄允;王宁(School of Physics and Electrical Engineering,Anyang Normal University,Anyang 455000,China;Department of Physics,Guangxi Normal University,Guilin 541004,China;State Key Laboratory of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]School of Physics and Electrical Engineering,Anyang Normal University,Anyang 455000,China [2]Department of Physics,Guangxi Normal University,Guilin 541004,China [3]State Key Laboratory of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Chinese Physics C》2019年第12期94-99,共6页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China,(11961131010,11422548 and U1867212);the Foundation of Guangxi innovative team(2017GXNSFGA198001,2016GXNSFFA380001);innovation fund of undergraduate at Anyang Normal University(ASCX/2019-Z055)

摘　　要：We propose a method for extracting the properties of the isobaric mass parabola based on the total doubleβ-decay energies of isobaric nuclei.Two important parameters of the mass parabola,the location of the mostβ-stable nuclei ZA and the curvature parameter bA,are obtained for 251 A values,based on the total doubleβ-decay energies of nuclei compiled in the AME2016 database.The advantage of this approach is that the pairing energy term PA caused by the odd-even variation can be removed in the process,as well as the mass excess M(A,ZA)of the most stable nuclide for the mass number A,which are employed in the mass parabolic fitting method.The Coulomb energy coefficient ac=0.6910 MeV is determined by the mass difference relation for mirror nuclei,and the symmetry energy coefficient is also studied by the relation asym(A)=025 bAZA.We propose a method for extracting the properties of the isobaric mass parabola based on the total doubleβ-decay energies of isobaric nuclei.Two important parameters of the mass parabola,the location of the most β-stable nuclei ZA and the curvature parameter bA,are obtained for 251 A values,based on the total double β-decay energies of nuclei compiled in the AME2016 database.The advantage of this approach is that the pairing energy term PA caused by the odd-even variation can be removed in the process,as well as the mass excess M（A,ZA） of the most stable nuclide for the mass number A,which are employed in the mass parabolic fitting method.The Coulomb energy coefficient ac=0.6910 MeV is determined by the mass difference relation for mirror nuclei,and the symmetry energy coefficient is also studied by the relation asym（A）=025 bAZA.

关 键 词：MASS PARABOLA doubleβ-decay ENERGIES COULOMB ENERGY COEFFICIENT symmetry ENERGY COEFFICIENT 

分 类 号：O57[理学—粒子物理与原子核物理]