气载放射性碘参考源制备方法

Study on the preparation method for reference source of airborne radioiodine

针对气载放射性碘在碘室内的行为规律建立物理模型,并通过实验确定物理模型中的关键参数,从而建立一套气载放射性碘参考源的制备方法。采用该方法可按预期活度值制备参考源,制备过程安全简便。应用该方法制备了三个131I核素参考源,其规划活度与实测活度的相对偏差不超过9%。

In this study,a physical model was established based on the behavior of airborne radioiodine in the iodine chamber and the key parameters in the physical model were determined through experiments,so as to establish a preparation method for airborne radioiodine reference sources.With this method,reference source can be prepared according to the expected activity value,and the preparation process is safe and simple.Three reference sources were prepared using this method,and the relative deviation between the expected activity and the measured activity did not exceed 9%.