砹(At)同位素链的α衰变的理论研究  

Theoretical studies on α decay half-lives of Astatine isotopes chain

作　　者：赵仲霞 杨海涛 杨光弟 傅永平 ZHAO Zhong-xia;YANG Hai-tao;YANG Guang-di;FU Yong-ping(School of Chemistry and Chemical Engineering,Zhaotong University,Zhaotong 657000,Yunnan,China;School of Physics and Information Engineering,Zhaotong University,Zhaotong 657000,Yunnan,China;School of Science,West Yunnan University,Lincang 677000,Yunnan,China)

机构地区：[1]昭通学院化学化工学院,云南昭通657000 [2]昭通学院物理与信息工程学院,云南昭通657000 [3]滇西科技师范学院数理学院,云南临沧677000

出　　处：《云南大学学报（自然科学版）》2023年第5期1043-1047,共5页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金(11805029);云南省地方本科高校基础研究联合专项资金(202101BA070001-144).

摘　　要：利用类Gamow模型系统地研究了^(191-220)At同位素链的α衰变半衰期,同时利用推广的Royer公式和推广的UDL公式进行了计算.理论计算值与实验值的比较表明,仅含有库仑势和离心势的类Gamow模型能够很好地再现实验数据,2个推广的半经验公式也能够很好地描述At同位素链的α衰变半衰期.基于此情况,利用类Gamow模型和2个半经验公式对未知核^(184-190)At的α衰变半衰期作出了预测,希望为实验合成新核素提供参考.The α decay half-lives of the ^(191-220)At isotope chain are calculated by Gamow-like model,and are also performed by the generalized Royer formula and the generalized UDL formula.The comparison between the theoretical results and experimental values show that the Gamow-like model with only Coulomb and centrifugal potentials can reproduce the experimental data well,and the two extended semiempirical formulas can also describe the α decay half-life of the At isotopes chain well.Based on this situation,the α decay half-life of the unknown nucleus ^(184-190)At are predicted by the Gamow-like model and the two semiempirical formulas,which hopes that the results can provide some references for the experimental synthesis of new nuclides.

关 键 词：Α衰变 砹同位素链 半衰期 

分 类 号：O571.32[理学—粒子物理与原子核物理]