从二氧化锰载体和辐照二氧化钍中制取纯^(233)U

Preparation of pure ^(223)U from aged MnO_2 precipitate containing ^(233)pa and irradiated ThO_2

本文研究了从吸附载带^(233)Pa的二氧化锰沉淀和中子辐照二氧化钍中制取纯^(233)U的方法。实验结果表明,应用阴离子交换与甲基膦酸二(1-甲庚)酯萃取相结合的方法可以制得高纯度^(233)U。该^(233)U经液体闪烁及同位素源激发X荧光分析证明无其他放射性杂质存在,可作为铀的优良示踪剂。本文也研究了制备^(233)Uα标准源的方法。

This paper describes a procedure for purification of 233U obtained from old MnO2 precipitate containing 233Pa and irradiated ThO2. Anion exchange and DMHMP solvent extraction were used for this purpose. The purity of 233U was checked by liquid scientil-lation counting and radioisotope X ray fluorescence analysis. A method for the preparation of standard a source is also given.