Systematic study of α decay half-lives for even–even nuclei within a deformed two-potential approach  

作　　者：Hai-Feng Gui Hong-Ming Liu Xi-Jun Wu Peng-Cheng Chu Biao He Xiao-Hua Li 桂海峰;刘宏铭;吴喜军;初鹏程;何彪;李小华(School of Nuclear Science and Technology,University of South China,421001 Hengyang,China;School of Math and Physics,University of South China,421001 Hengyang,China;The Research Center for Theoretical Physics,Science School,Qingdao University of Technology,Qingdao 266033,China;College of Physics and Electronics,Central South University,Changsha 410083 China;National Exemplary Base for International Sci&Tech.Collaboration of Nuclear Energy and Nuclear Safety,University of South China,Hengyang 421001 China;Cooperative Innovation Center for Nuclear Fuel Cycle Technology&Equipment,University of South China,421001 Hengyang.China;Key Laboratory of Low Dimensional Quantum Structures and Quantum Control,Hunan Normal University)

机构地区：[1]School of Nuclear Science and Technology,University of South China,421001 Hengyang,China [2]School of Math and Physics,University of South China,421001 Hengyang,China [3]The Research Center for Theoretical Physics,Science School,Qingdao University of Technology,Qingdao 266033,China [4]College of Physics and Electronics,Central South University,Changsha 410083 China [5]National Exemplary Base for International Sci&Tech.Collaboration of Nuclear Energy and Nuclear Safety,University of South China,Hengyang 421001 China [6]Cooperative Innovation Center for Nuclear Fuel Cycle Technology&Equipment,University of South China,421001 Hengyang.China [7]Key Laboratory of Low Dimensional Quantum Structures and Quantum Control,Hunan Normal University

出　　处：《Communications in Theoretical Physics》2022年第5期86-96,共11页理论物理通讯（英文版）

基　　金：the National Natural Science Foundation of China(Grants No.12175100 and No.11975132);the Construct Program of the Key Discipline in Hunan Province;the Research Foundation of Education Bureau of Hunan Province,China(Grant No.18A237);the Innovation Group of Nuclear and Particle Physics in USC;the Shandong Province Natural Science Foundation,China(Grant No.ZR2019YQ01);Hunan Provincial Innovation Foundation For Postgraduate(Grant No.CX20210942 and No.CX20200909);the Opening Project of Cooperative Innovation Center for Nuclear Fuel Cycle Technology and Equipment,University of South China(Grant No.2019KFZ10)。

摘　　要：In this work,we systematically study theαdecay half-lives of 196 even–even nuclei using a two-potential approach improved by considering nuclear deformation.The results show that the accuracy of this model has been improved after considering nuclear deformation.In addition,we extend this model to predict theαdecay half-lives of Z=118 and 120 isotopes by inputting theαdecay energies extracted from the Weizsacker–Skyrme-type(WS-type)mass model,a simple nuclear mass formula,relativistic continuum Hartree–Bogoliubov theory and Duflo-Zuker-19(DZ19)mass model.It is useful for identifying the new superheavy elements or isotopes for future experiments.Finally,the predictedαdecay energies and half-lives of Z=118 and 120isotopes are analyzed,and the shell structure of superheavy nuclei is discussed.It shows that the shell effect is obvious at N=184,while the shell effect at N=178 depends on the nuclear mass model.

关 键 词：Α-DECAY deformed two-potential approach superheavy nuclei magic number 

分 类 号：O571.321[理学—粒子物理与原子核物理]