Calculations of theα-decay properties of Z=120,122,124,126 isotopes  

作　　者：Zhishuai Ge Gen Zhang Shihui Cheng Yu.S.Tsyganov Feng-Shou Zhang 葛志帅;张根;程诗慧;Yu.S.Tsyganov;张丰收(Key Laboratory of Beam Technology of Ministry of Education,Beijing Radiation Center,Beijing 100875,China;Key Laboratory of Beam Technology of Ministry of Education,College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China;Flerov Laboratory of Nuclear Reactions,Joint Institute for Nuclear Research,RU-141980 Dubna,Russian Federation;Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000,China)

机构地区：[1]Key Laboratory of Beam Technology of Ministry of Education,Beijing Radiation Center,Beijing 100875,China [2]Key Laboratory of Beam Technology of Ministry of Education,College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China [3]Flerov Laboratory of Nuclear Reactions,Joint Institute for Nuclear Research,RU-141980 Dubna,Russian Federation [4]Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000,China

出　　处：《Chinese Physics C》2020年第10期98-114,共17页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China(11635003,11025524,11161130520);the National Basic Research Program of China(2010CB832903);the European Commission’s 7th Framework Programme(Fp7-PEOPLE-2010-IRSES)under Grant Agreement Project(269131);the General Financial Grant from the China Postdoctoral Science Foundation(2017M620672);BeiJing Academy of Science and Techology-Reform and Development Project(BJASTRD PY2020GJ28);BJAST Project(BGS201902)。

摘　　要：Theα-decay properties of even-Z nuclei with Z=120,122,124,126 are predicted.We employ the generalized liquid drop model(GLDM),Royer's formula,and universal decay law(UDL)to calculate theα-decay half-lives.By comparing the theoretical calculations with the experimental data of known nuclei from Fl to Og,we confirm that all the employed methods can reproduce theα-decay half-lives well.The preformation factor Pαandα-decay energy Qαshow that ^298,304,314,316,324,326,338,348120,^304,306,318,324,328,338122,and ^328,332,340,344124 might be stable.Theα-decay half-lives show a peak at Z=120,N=184,and the peak vanishes when Z=122,124,126.Based on detailed analysis of the competition betweenα-decay and spontaneous fission,we predict that nuclei nearby N=184 undergoα-decay.The decay modes of ^287−339120,^294−339122,^300−339124,and ^306−339126 are also presented.

关 键 词：Α-DECAY spontaneous fission LIFETIME 

分 类 号：O571.321[理学—粒子物理与原子核物理]