基于γ能谱特征峰测定铀矿石样品铀-镭平衡系数  

Determination of Uranium-Radium Equilibrium Coefficient of Uranium Ore Sample Using Characteristic Peaks in γ-ray Spectrum

作　　者：尹旺明[1] 刘宏章[2] 汤彬[1,3] 佘冠军[1] 

机构地区：[1]东华理工大学,江西抚州344000 [2]咸宁学院,湖北咸宁437100 [3]核资源与环境教育部重点实验室,江西南昌330013

出　　处：《原子能科学技术》2010年第7期769-772,共4页Atomic Energy Science and Technology

基　　金：国家高技术研究发展计划资助项目(2007AA06Z111)

摘　　要：在铀矿勘探中,了解铀系平衡状况对储量评价十分重要。本文分析了利用γ能谱中的特征峰测定铀-镭平衡系数的原理,研究了通过铀矿石的高分辨率多道γ能谱中1001.03keV谱峰和934.06keV谱峰分别推算238U、226Ra的含量并以此计算铀-镭平衡系数的数学过程。开展了铀矿模型测量实验,实验结果验证了该方法的可行性,可应用于铀矿γ测井勘探工作中。It is important to acquire the equilibrium feature of uranium series for the estimation of reserves in uranium exploration.The theory of direct determination of uranium-radium equilibrium coefficient in the uranium ore by the γ characteristic radiation peaks in the multichannel γ-ray spectrum was analyzed.The procedure was researched for the determination of radioisotopes content of 238U according to the 1 001.03 keV peak,226Ra according to the 934.06 keV peak and assessing the degree of uranium-radium equilibrium in natural uranium ore by measuring its high-resolution multichannel γ-ray spectrum.To study the possibility of such a procedure,the γ-ray spectra of four models of ore strata were measured.Results of the experimentation indicate that this method can be applied to the exploration of uranium resource by γ-ray logging.

关 键 词：铀-镭平衡系数 铀矿 γ特征峰 多道γ能谱 含量 

分 类 号：P631[天文地球—地质矿产勘探] TL81[天文地球—地质学]