α Decay Properties of Even-Even Nuclei296-308120 Within the Two-Potential Approach  

作　　者：Jun-Yao Xu Jiu-Long Chen Jun-Gang Deng Jun-Hao Cheng Hong-Ming Liu Xiao-Hua Li 徐俊瑶;陈玖龙;邓军刚;程俊皓;刘宏铭;李小华(School of Nuclear Science and Technology,University of South China,Hengyang 421001,China;Cooperative Innovation Center for Nuclear Fuel Cycle Technology&Equipment,University of South China,Hengyang 421001,China;Key Laboratory of Low Dimensional Quantum Structures and Quantum Control,Hunan Normal University,Changsha 410081,China)

机构地区：[1]School of Nuclear Science and Technology,University of South China,Hengyang 421001,China [2]Cooperative Innovation Center for Nuclear Fuel Cycle Technology&Equipment,University of South China,Hengyang 421001,China [3]Key Laboratory of Low Dimensional Quantum Structures and Quantum Control,Hunan Normal University,Changsha 410081,China

出　　处：《Communications in Theoretical Physics》2019年第11期1328-1334,共7页理论物理通讯（英文版）

基　　金：Supported by National Natural Science Foundation of China under Grant Nos.11205083 and 11505100;the construct program of the key discipline in Hunan province;the Research Foundation of Education Bureau of Hunan Province;China under Grant Nos.15A159 and18A237;the Natural Science Foundation of Hunan Province;China under Grant Nos.2015JJ3103,2015JJ2123;the Innovation Group of Nuclear and Particle Physics in USC;the Shandong Province Natural Science Foundation,China under Grant No.ZR2015AQ007;the National Innovation Training Foundation of China under Grant No.201910555161;the Hunan Provincial Innovation Foundation for Postgraduate under Grant No.CX20190714

摘　　要：In the present work,we predict the α decay half-lives of unknown even-even nuclei 296-308120 within the two-potential approach,whose α decay energy Qa is calculated using WS3+mass model.To reduce the deviations between the predictions and experimental data due to nuclear shell effect,the analytic formula of α decay hindrance factor is introduced to the two-potential approach,whose parameters had been extracted from even-even nuclei in the region of 82 <Z <126 and 152 <N ≤184 in our previous work [Deng et al.,Chin.Phys.C 42(2018) 044102].In addition,for comparing,we use a type of α decay general formula Universal Decay Law(UDL) and a semi-empirical formula in the superheavy nucleus(SEMFLS) to calculate the half-lives of even-even nuclei 296-308120.The results indicate that our predicted values and the calculated values of the above two empirical formulas are mutually confirmed.Meanwhile,we systematically study α decay chains of 296-308120 and predict the decay modes for superheavy nuclei to help to identify new superheavy isotopes.

关 键 词：α DECAY two-potential approach EVEN-EVEN NUCLEI with Z = 120 hindrance FACTOR 

分 类 号：O57[理学—粒子物理与原子核物理]