(EC+) decay study of 128Ce
Li Zhankui1 - Xu Shuwei1 - Xie Yuanxiang1 - Zhang Tianmei1 - Ma Ruichang1 - Du Jinzhou2 - Guo Yingxiang1 - Ge Yuanxiu1 - Wang Chunfang1 - Guo Bing1 - Xing Jianping1
1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, P.R. China
2 Department of Modern Physics, Lanzhou University, Lanzhou 730000, P.R. China
Received: 29 September 1999 / Revised version: 5 November 1999 Communicated by D. Schwalm
The (EC+ ) decay of 128Ce was reinvestigated in the 116Sn (16O, 4n) reaction by using a helium-jet tape transport system. The close half-lives of 128Ce and 129Ce made it difficult to separate the decay rays of both nuclei apart. Instead of the excitation-function measurements, both reactions of 16O+116 Sn and 16O+117Sn were carried out, and from their comparisons, the decay rays of 128Ce were clearly told from those of 129 Ce. Based on X- and - coincidence measurements, a detailed (EC+ ) decay scheme of 128Ce has been proposed, which revises the previous one.
23.20.Lv Gamma transitions and level energies - 23.40.-s decay; electron and muon capture - 27.60.+j
Copyright Società Italiana di Fisica, Springer-Verlag 2000