原子能科学技术Issue(10)：1739-1745,7.DOI:10.7538/yzk.2014.48.10.1739
三步分离法制备高丰度的142La
Preparation of 142 La From Fission Product Using Three-step Separation
丁有钱 1张小林 2白涛 2凡金龙 2解峰 2常永福 2杨志红 1张生栋 1崔安智 1杨磊 1毛国淑 1孙宏清 1师全林 2王世联2
作者信息
- 1. 中国原子能科学研究院 放射化学研究所，北京 102413
- 2. 西北核技术研究所，陕西 西安 710024
- 折叠
摘要
Abstract
To precisely measure the decay parameters of 142 La ,the prepared 142 La sample must have high activity ,high abundance and be free from carrier .A separation proce-dure with three steps was proposed to prepare the sample from fission products .In order to receive optimal results ,the decay relationship of mother-daughter nuclides in the 142 mass chain and the differences of their independent fission yields need to be taken into account .T he established three-step chemical procedure involves one BaCl2 · 2H2 O precipitation and two HDEHP extraction chromatographic separations .A special-ized set of equipment was created and used to fast radiochemically separate the 142 La in batches .As a result ,the total separation lasts about 20 min ,and the chemical recovery rate is about 80% .T he decontamination factors for other nuclides are greater than 103 , and the activity ratio of 142 La to 141 La is more than 3.5 .关键词
142La/高丰度/三步分离法Key words
142 La/high enrichment/three-step separation分类
数理科学引用本文复制引用
丁有钱,张小林,白涛,凡金龙,解峰,常永福,杨志红,张生栋,崔安智,杨磊,毛国淑,孙宏清,师全林,王世联..三步分离法制备高丰度的142La[J].原子能科学技术,2014,(10):1739-1745,7.
