Properties of Z=114 super-heavy nuclei  

作　　者：Yu-Qi Xin Na-Na Ma Jun-Gang Deng Tian-Liang Zhao Hong-Fei Zhang 

机构地区：[1]School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China [2]Joint Department for Nuclear Physics,Institute of Modern Physics,CAS and Lanzhou University,Lanzhou 730000,China [3]Engineering Research Center for Neutron Application,Ministry of Education,Lanzhou University,Lanzhou 730000,China

出　　处：《Nuclear Science and Techniques》2021年第6期1-10,共10页核技术（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.10775061,11175054,11675066,11665019,and11947229);the China Postdoctoral Science Foundation(No.2019M663853);the Fundamental Research Funds for the Central Universities(Nos.lzujbky-2017-ot04 and lzujbky-2020-it01);Feitian Scholar Project of Gansu Province。

摘　　要：The center of the stability island of super-heavy nuclei(SHN)is the subject of intense experimental and theoretical investigations and has potential technological applications.^(298)^(114) Fl lies in the Z=114 isotopic chain as a persuasive candidate of the spherical double-magic nucleus in SHN,and in this study,the calculations of nuclear binding energies,one-nucleon and two-nucleon separation energies,a-decay energies,and the corresponding halflives provide strong evidence for this point.These calculations within an improved Weizsacker-Skyrme nuclear mass model(WS*)were performed and compared with the calculations of the finite-range droplet model(FRDM2012)and experimental data for Z=114 isotopes and N=184 isotones.Concurrently,the corresponding single-particle levels in a Woods-Saxon potential well with a spin-orbit term are calculated,which can be used as a powerful indicator to identify the shell effects existing in114298Fl.Both the study of the properties of the isotopic chain and microphysical quantities provide a vital signal that ^(298)^(114) Fl is a spherical double-magic nucleus and also the center of the SHN.

关 键 词：Super-heavy nuclei Separation energy Single-particle level αdecay 

分 类 号：O571[理学—粒子物理与原子核物理]