从辐照过的钍中分离镤的研究

摘要: 研究了以１－苯基－３－甲基－４－苯甲酰基吡唑啉酮－５（ＰＭＢＰ）和三异辛胺（ＴＩＯＡ）为萃取剂，盐酸－氢氟酸溶液为反萃剂，从中子辐照过的钍中分离纯化镤的一个快速、有效的流程。对流程的一些主要步骤中的分离条件作了研究。以钍的裂变产物为多重示踪剂检验了该流程，得到了主要杂质元素的去污因子，给出了镤的回收率。

Abstract: SEPARATION OF PROTACTINIUM FROM THORIUMIRRADIATED BY 14 MeV NEUTRONSFang Keming Yang Weifan Mou Wantong Yuan ShuangguiLi Zongwei Shen Shuifa Zhang Xueqian(Institute of Modern Physics,the Chinese Academy of Sciences,Lanzhou 730000)ABSTRACTA rapid and efficient procedure for separation of trace protactinium from thorium irradiated by 14 MeV neutrons is described by using 1phenyl3methyl4benzoylpyrazolone5(PMBP) and triisooctyl amine (TIOA) as extractants and hydrochlorichydrofluoric acid solution as backextractant.The separating conditions in some main steps of this procedure has been studied.The decontamination factors for principal impurity elements and the recovery efficiency for 233Pa has been obtained.The procedure is verified by using the active products of thorium as multitracers.Keywords Protactinium Thorium PMBP TIOA