抽注水中子能谱解谱结果对比研究  

Study on Neutron Energy Spectrum Method of Pumping Water Injection

作　　者：张家磊 周涛[1,2,3] 丁锡嘉 李子超 冯祥[1,2,3] 杨剑波 ZHANG Jia-lei;ZHOU Tao;DING Xi-jia;LI Zi-chao;FENG Xiang;YANG Jian-bo(School of Nuclear Science and Engineering,North China Electric Power University,Beijing 102206,China;Institute of Nuclear Thermal-hydraulic Safety and Standardization,North China Electric Power University,Bei­jing 102206,China;Beijing Key Laboratory of Passive Safety Technology for Nuclear Energy,North China E-lectric Power University,Beijing 102206,China;Chengdu University Of Technology,Chengdu Sichuan 610059,China)

机构地区：[1]华北电力大学核科学与工程学院,北京102206 [2]华北电力大学核热工安全与标准化研究所,北京102206 [3]非能动核能安全技术北京市重点实验室,北京100206 [4]成都理工大学,四川成都610059

出　　处：《中国核电》2019年第6期691-694,共4页China Nuclear Power

基　　金：国家重点研发计划(2016YFC1402500)

摘　　要：中子辐射场的能谱测量和能谱解析对于核物理实验和辐射防护起着非常重要的作用。通过分析能谱测量关系和响应函数模拟原理,利用UMG软件及其程序算法求解了取样海水中的中子能谱,得到两种程序的解谱曲线。通过比较,两个程序的解谱结果重合,且趋势走向与预置谱相吻合;在3~8 MeV能量区间内,计数率有轻微下降;三条趋势线在30 MeV以内计数率呈现结果较好,在30 MeV以上的能量区间,计数率基本趋于0,符合多球中子谱仪的能区测量范围特点。解谱结果符合要求,没有出现较大的解谱偏差。Energy spectrum measurement and energy spectrum analysis of neutron radiation field play a very important role in nuclear physics experiment and radiation protection.By analyzing the spectrum measurement relationship and response function simulation principle,the neutron spectrum in sampled seawater is solved by UMG software and its program algorithm,and the spectrum solution curves of the two programs are obtained.By comparison,the spectral results of the two programs coincide with each other,and the trend is consistent with the preset spectra;In the energy range of 3 MeV to 8 MeV,the counting rate decreased slightly;The counting rate of the three trend lines within 30 MeV shows a good result.In the energy range above 30 MeV,the counting rate basically tends to zero,which conforms to the characteristics of the energy range of the multi-sphereneutron spectrometer.The spectral results meet the requirements and there is no significant spectral deviation.

关 键 词：抽注水 中子能谱 能谱解析 计数率 

分 类 号：TM623[电气工程—电力系统及自动化]