Calculations of β-decay half-lives of proton-rich nuclei  

作　　者：NI DongDong REN ZhongZhou ZHI QiJun 

机构地区：[1]Department of Physics,Nanjing University,Nanjing 210093,China [2]Kavli Institute for Theoretical Physics China,Beijing 100190,China [3]Center of Theoretical Nuclear Physics,National Laboratory of Heavy-Ion Accelerator,Lanzhou 730000,China [4]GSI Helmholtzzentrum für Schwerionenforschung,Darmstadt,Germany [5]School of Physics and Electronic Science,Guizhou Normal University,Guiyang 550001,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2012年第12期2397-2406,共10页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grants Nos.10735010,10975072,11035001,11120101005 and 11165006);the National Major State Basic Research and Development of China(Grants Nos.2013CB834400 and 2010CB327803);CAS Knowledge Innovation Project(Grant No.KJCX2-SW-N02);the Research Fund of Doctoral Point(RFDP)(Grants No.20100091110028);the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)

摘　　要：We investigate the half-lives of β + /EC(electron capture) decay using the proton-neutron quasiparticle random-phase approximation(pnQRPA) with a δ-form Gamow-Teller residual interaction.Both particle-hole and particle-particle residual interactions are consistently introduced in dealing with the pnQRPA matrix equation.The sensitivity of the calculated half-lives to some physical quantities used in the calculations is examined.Calculations are performed for even-even neutron-deficient isotopes ranging from Z = 10 to Z = 76.Good agreement between experiment and theory is achieved especially for the nuclei far from stability,and the results of our calculations are discussed with comparison with other theoretical results.Predictions on the β-decay half-lives of some very neutron-deficient nuclei are also given for reference in future experiments.We investigate the half-lives of β ＋ /EC（electron capture） decay using the proton-neutron quasiparticle random-phase approximation（pnQRPA） with a δ-form Gamow-Teller residual interaction.Both particle-hole and particle-particle residual interactions are consistently introduced in dealing with the pnQRPA matrix equation.The sensitivity of the calculated half-lives to some physical quantities used in the calculations is examined.Calculations are performed for even-even neutron-deficient isotopes ranging from Z = 10 to Z = 76.Good agreement between experiment and theory is achieved especially for the nuclei far from stability,and the results of our calculations are discussed with comparison with other theoretical results.Predictions on the β-decay half-lives of some very neutron-deficient nuclei are also given for reference in future experiments.

关 键 词：proton-rich nuclei β-decay half-lives quasiparticle random-phase approximation 

分 类 号：O571.322[理学—粒子物理与原子核物理]