从CsCl靶中分离I、Ba和Ce的化学流程  

Chemical Separation of I,Ba and Cs from CsCl Targets

作　　者：丁华杰[1] 徐岩冰[1] 杨维凡[1] 袁双贵[1] 卢希庭[2] 

机构地区：[1]中国科学院近代物理研究所,兰州730000 [2]北京大学物理学院,北京100871

出　　处：《科学技术与工程》2008年第6期1538-1540,1549,共4页Science Technology and Engineering

基　　金：国家自然科学基金(10575118);中国科学院资助

摘　　要：用47MeV/nucleon的12C离子轰击133Cs靶,产生许多种不同元素的同位素。利用经典的化学分离方法,从大量的Cs和其它反应产物混合物中分离出I、Ba和Ce等。使用离线γ谱学方法,完成I、Ba、Ce等样品的γ活性测量。根据每种元素不同同位素的特征γ射线峰的强度和丰度,对I、Ba和Ce等样品中杂质的含量进行分析。结果显示该流程对杂质元素去污的效果是满意的。The CsCl targets were bombarded with 47 MeV/nucleon ^12C ions. The isotopes of different elements would be produced in the reaction. I, Ba and Ce were separated chemically from large amount of Cs and other reaction product mixture by traditional separation methods. The γ-spectrum measurement was completed for I, Ba and Ce samples by using off-line γ-spectroscopy. The quantity of impurities in I, Ba and Ce samples are analyzed based on the intensities of the characteristic γ-ray peaks of different isotopes and other relative information. The results demonstrate that the effect of the procedure upon decontamination of impurity elements is satisfactory.

关 键 词：中能^12C离子 ^133Cs靶 I、Ba、Ce γ活性测量 

分 类 号：O571.431[理学—粒子物理与原子核物理] O571.432[理学—物理]