【作者】 龚建； 伍怀龙； 龚有进； 唐元明； 刘晓亚；

【Author】 GONG Jian, WU Huai-long, GONG You-jin, TANG Yuan-ming, LIU Xiao-ya (Institute of Nuclear Physics and Chemistry , China Academy of Engineering Physics, Mianyang 621900, China)

【机构】 中国工程物理研究院核物理与化学研究所；

【摘要】 在军控核查研究气体在环境中的沉积、扩散等的项目中,为寻找1种气体核素示踪方法,本工作对放射性气体核素127Xe的制备方法进行研究。在反应堆中对盛装在玻璃管中的普通氙辐照96 h,经一定时间冷却后,将辐照产物吸附到处于液氮温度下的特制源盒中,20 min后,待Xe气体在源盒中达到均匀分布再进行γ能谱测量,以获得127Xe的准确活度值。实验结果证实,应用上述方法制备放射性气体示踪核素127Xe是可行的。更多还原

【Abstract】 In order to study the gas deposition and diffusion in environment, the preparation process of radioactive gas 127Xe as a new gas tracer is investigated. The ordinary xenon was filled in glass tubes and irradiated for 96 h in nuclear reactor. The irradiation products was transported into a special source box filled with activated charcoal at liquid nitrogen temperature. When the equilibrium distribution of gas Xe in the source box is achieved, the γ-spectrum was continuously acquired. The experiment result shows that the present 127Xe preparation process is feasible.更多还原