1．5～4．5MeVα粒子引起Lu，Ta和Au　L亚壳层电离的研究  

L-subshell Ionization of Lu. Ta and An Induced by 1. 5-4. 5 MeV Alpha Particles

作　　者：蔡晓红[1] 陈熙萌[1] 刘兆远[1] 马树勋[1] 陈子纯 徐谦[1] 刘惠萍[1] 马新文[1] 

机构地区：[1]兰州大学原子核研究所,兰州中国科学院近代物理研究所

出　　处：《兰州大学学报（自然科学版）》1996年第1期36-40,共5页Journal of Lanzhou University(Natural Sciences)

摘　　要：以能量为１．５～４．５ＭｅＶ的α粒子轰击Ｌｕ，Ｔａ和Ａｕ靶，测得Ｌ亚壳层Ｘ射线产生截面．利用荧光产额和Ｃｏｓｔｅｒ－Ｋｒｏｎｉｇ跃迁几率等原子参数得到Ｌ亚壳层电离截面，将实验所得Ｌ亚壳层电离截面与ＥＣＰＳＳＲ理论预言值进行比较，对Ｌ１和Ｌ３亚壳层，理论值与实验结果符合较好．讨论了ＥＣＰＳＳＲ理论的Ｌ２亚壳层电离截面与实验结果的偏差来源．The L-X-ray production cross sections of Lu .Ta and An by 1. 5～4. 5 MeV alpha particles were measured. The measured data were converted into L-subshell ionization cross sections by using some atomic parameters. The obtained ionization cross sections were compared with the predictions of ECPSSR theory. The obtained L3-subshell ionization cross sections in the present work agree well with those of the ECPSSR theory. The departures of the measured L2-subshell ionization cross sections from the ECPSSR are discussed.

关 键 词：碰撞电离 L亚壳层电离 α粒子轰击 镥 钽 金 

分 类 号：O562.5[理学—原子与分子物理]