基于中子活化分析的^(129)I嬗变率测量方法实验研究  

Experimental Research of Measurement Method of ^(129)I Transmutation Ratio Based on Neutron Activation Analysis

作　　者：潘孝兵[1] 欧阳晓平[1,2] 屠荆[1] 凤仪[3] 张学斌[3] 张文首[1] 刘月恒[1] 李雪松[1] 

机构地区：[1]西北核技术研究所,陕西西安710024 [2]西安交通大学,陕西西安710049 [3]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《原子能科学技术》2011年第5期611-614,共4页Atomic Energy Science and Technology

基　　金：国家863计划资助项目(2009AA050705)

摘　　要：基于中子活化分析(NAA),建立一种简便可靠的129I嬗变率测量方法。采用127I制作模拟靶件,利用1个参比靶件与两个嬗变模拟靶件同时照射,测量128I特征γ射线强度之比,并根据比值计算嬗变率。实验结果验证了方法的可行性,为129I的高注量率反应堆嬗变率测定提供了技术支持。Based on neutron activation analysis（NAA） technology,a reliable and convenient method was developed for 129I transmutation ratio measurement.Simulative targets of natural 127I were designed to examine the feasibility of the method.One reference target and two transmutation targets of 127I（simulating targets before and after transmutation,respectively） were irradiated together on a NAA device.According to the intensity ratio of gamma ray emitted by 128I in the transmutation targets and the reference,transmutation ratio was measured correctly.The results show that the NAA method developed in this work is feasible and convenient,and could be used for determining the transmutation ratio of 129I.

关 键 词：中子活化分析 嬗变率 长寿命裂变产物 129I 

分 类 号：O657.4[理学—分析化学]