超重核Z=117同位素链的α衰变性质  

Alpha decay properties of the Z=117 isotopes

作　　者：张鹏[1] 张鸿飞[1] 高远[1] 李君清[1,2] 刘圳[1] 

机构地区：[1]兰州大学核科学与技术学院,兰州730000 [2]中国科学院近代物理研究所,兰州730000

出　　处：《中国科学：物理学、力学、天文学》2012年第9期941-947,共7页Scientia Sinica Physica,Mechanica & Astronomica

基　　金：国家自然科学基金(批准号:10775061;10975064;11175074;11105035);兰州大学创新创业行动计划项目资助

摘　　要：运用推广液滴模型结合WKB方法对新合成超重核293117和294117及其α衰变链中各核素的半衰期进行系统性分析,论计算到超重核半衰期与实验值符合非好.说明推广液滴模型可以成功研究超重核半衰期.本文还预测了Z=117同位素链未合成超重核α衰变半衰期.计算结果表明在Z=117同位素链中存在比已合成293117和294117更稳定、寿命更超重核.With the Generalized Liquid Drop Model （GLDM） combined with WKB approximation, we give a systematic analysis for the half-lives of the newly observed superheavy nuclei 293117 and 294117 isotopes and α-decay products. The calculated half-lives of superheavy nuclei coincide with the experimental data very well, implying the success of the Generalized Liquid Drop Model for studying the α-decay properties of superheavy nuclei. We also predict the half-lives of superheavy nuclei of Z=117 isotopes which are not synthesized. The results show that in the Z=117 isotopes existing more stable superheavy nuclei than the observed 293117 and 294117.

关 键 词：Α衰变 超重核 推广液滴模型 半衰期 

分 类 号：O562.6[理学—原子与分子物理] O571.321[理学—物理]