超重核^(274-319)119同位素链的α衰变与自发裂变的竞争  

Competition betweenαDecay and Spontaneous Fission in ^(274-319)119)Isotopes

作　　者：杨海涛 赵仲霞[2] 赵伦 杜国芳 傅永平 YANG Hai-tao;ZHAO Zhong-xia;ZHAO Lun;DU Guo-fang;FU Yong-ping(School of Physics and Information Engineering,Zhaotong University,Zhaotong 657000 China;School of Chemistry and Chemical Engineering,Zhaotong University,Zhaotong 657000 China;School of Mathematics and Physics,West Yunnan Normal University of Science and Technology,Lincang 677000,China)

机构地区：[1]昭通学院物理与信息工程学院,云南昭通657000 [2]昭通学院化学与化工学院,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：《昭通学院学报》2020年第5期8-10,共3页Journal of Zhaotong University

基　　金：国家自然科学基金项目(11805029);云南省基础研究计划青年项目(2017FD147)。

摘　　要：基于统一裂变模型和自发裂变公式,计算了^(274-319)119同位素链的衰变和自发裂变的竞争关系。结果表明在A=283~297区间,核素以衰变为主要衰变模式,在A>297和A<283,核素则是以自发裂变为主要的衰变模式。通过对衰变模式的预测为实验工作提供一定的理论参考。Based on the framework of the unified fission model(UFM)and the spontaneous fission formula,the alpha decay and spontaneous fission half-lives for ^(274-319)119 isotopes are calculated.The results show that the alpha decay is the main modes of decay modes for Z=119 isotopes in the range of A=283~297,and spontaneous fission is dominant for those with A>297 and A<283 nuclei.The predictions of the decay models may be useful for future experiments.

关 键 词：超重核 统一裂变模型 Α衰变 自发裂变 

分 类 号：O572.2[理学—粒子物理与原子核物理]