低放射性钍的多道伽马能谱分析方法探讨  

Multi-channel Gamma Spectrometry Analysis of Low-level Radioactive Thorium

作　　者：王瑞芬[1] 凤吾利 Wang Ruifen, Feng Wuli(Anhui Nuclear Industry Exploration Institute, Wuhu 241000, Chin)

机构地区：[1]安徽省核工业勘查技术总院,安徽芜湖241000

出　　处：《中国资源综合利用》2018年第1期32-34,共3页China Resources Comprehensive Utilization

摘　　要：作为一种常规的测量土壤、岩石中的放射性核素的物理方法,伽马能谱分析能够通过一次测量获得多个放射性核素的含量,其样品制备也比较简单。本文运用多道伽马能谱仪(NaI(TI)能谱仪),对实际地质样品中低含量放射性的钍元素进行分析,通过改变实测样品颗粒度、含水率、质量、样品盒尺寸等测量参数,探究不同检测条件对钍元素测量结果的影响,并采用矩阵法对检测结果进行分析,从而优化能谱法测钍元素的最佳检测操作参数。As a conventional physical method for measuring radionuclides in soil and rock, gamma spectroscopy can obtain the content of multiple radionuclides through one measurement. The sample preparation is relatively simple. In this paper, multi-channel gamma spectrometer（Na I（TI） spectrometer）, the actual geological samples of low-content, low-radioactive thorium analysis, by changing the measured particle size, water content, And other measurement parameters to explore different testing conditions on thorium measurement results, and the use of matrix analysis of the test results to optimize the detection of thorium energy spectrum method to determine the best operating parameters.

关 键 词：低放射性 钍 伽马能谱法 

分 类 号：TU50[建筑科学—建筑技术科学] TL817[核科学技术—核技术及应用]