基于瞬发伽马中子活化分析技术的元素标准谱的研发  

Development of Elemental Standard Spectra Based on Prompt Gamma-ray Neutron Activation Analysis Technology

作　　者：战俭 张喆 刘宸汐 张悦轩 韩长智 程九鑫 王智健 ZHAN Jian;ZHANG Zhe;LIU Chen-Xi;ZHANG Yue-Xuan;HAN Chang-Zhi;CHENG Jiu-Xin;WANG Zhi-Jian(Chinese Academy of Customs Administration,Qinhuangdao 066004;East China University of Technology,Nanchang 330013)

机构地区：[1]中国海关管理干部学院,秦皇岛066004 [2]东华理工大学,南昌330013

出　　处：《中国口岸科学技术》2024年第6期58-66,共9页China Port Science and Technology

基　　金：海关总署科研项目(2021HK249);国家重点研发计划项目(12075055)。

摘　　要：在工业、环境和科学研究领域,元素分析的需求越来越大,而元素标准谱的准确性直接影响元素分析的准确性。本文研究了瞬发伽马中子活化分析(prompt gamma-ray neutron activation analysis,PGNAA)技术元素标准谱的构建,通过开发标准谱生成器(East China University of Technology Prompt Gamma-ray,ECUTPG),用于生成中子活化分析应用的标准谱。本文验证了LaBr3探测器与中子发生器一体机在元素分析载荷应用中,元素标准谱库的建立和实际效果,并通过解谱方法显示该元素标准谱库的可行性与准确性。Elemental analysis plays an important role in industry,environment and scientific research.The accuracy of elemen-tal standard spectra dominatesdirectly influences the accuracy of elemental analysis.This paper studies the construction of standard spectra of elements in the prompt gamma-ray neutron activation analysis(PGNAA)technology,and generates standard spectra for neutron activation analysis applications by developing a standard spectrum generator(East China University of Technology Prompt Gamma-ray,ECUTPG).This paper verifies the construction and actual effect of the element standard spectral library in the elemental analysis load application of the integrated LaBr3 detector and neutron generator,and shows the feasibility and accuracy of the element standard spectral library through the Least Squares method.

关 键 词：元素标准谱 瞬发伽马中子活化分析 最小二乘法 探测器响应函数 LaBr3探测器 蒙特卡洛方法 

分 类 号：O652[理学—分析化学]