^(137)Eu衰变的在线测量  

On-line Measurement of ^(137)Eu Decay

作　　者：甘再国[1] 秦芝[1] 范红梅[1] 郭俊盛[1] 王同庆[1] 郭斌[1] 雷相国[1] 徐岩冰[1] 刘洪业[1] 杨永峰[1] 陈展图[1] 刘军辉[1] 何建军[1] 熊兵[1] 胡青元[1] 古中道[1] 董成富[1] 郭应祥[1] 袁双贵[1] 靳根明[1] 

机构地区：[1]中国科学院近代物理研究所,兰州730000

出　　处：《原子核物理评论》1999年第4期243-245,共3页Nuclear Physics Review

基　　金：国家自然科学基金!19775053;中国科学院资助

摘　　要：使用在线同位素分离器及快带传输系统研究了缺中子稀土核137Eu的衰变性质，测量了A＝137核的γ、X单谱及γ-X、γ-γ符合谱，得到了137Eu核的半衰期为9．8s，并观测到了137Eu的一条能量为209．0keV的衰变γ线．The decay properties of neutron-deficient rare earth nucleus 137Eu have been studied by means of on-line isotope separator combined with rapid tape transport system.The products were produced by 190 MeV 36Ar bombarding on Pd target via natPd (36Ar, pxn)137Eu reactions. γ, X singles and γ-X, γ-γ coincidence spectra of the nuclei with A=137 were measured. The half-life of 137Eu is obtained to be 9. 8 s. A γ-ray with energy of 209. 0 keV for 137Eu was observed.

关 键 词：在线同位素分离器 铕 衰变 在线测量 

分 类 号：O571.3[理学—粒子物理与原子核物理]