典型文献
Development of a low-background neutron detector array
文献摘要：
A low-background neutron detector array was developed to measure the cross section of the 13C(α,n)16O reaction,which is the neutron source for the s-process in AGB stars,in the Gamow window(Ec.m.=190±40 keV)at the China Jinping Underground Laboratory(CJPL).The detector array consists of 24 3He proportional counters embedded in a polyethylene cube.Owing to the deep underground location and a borated polyethylene shield around the detector array,a low background of 4.5(2)/h was achieved.The 51V(p,n)51Cr reaction was used to determine the neutron detection efficiency of the array for neutrons with energies En＜1 MeV.Geant4 simulations are shown to effectively reproduce the experimental results.They were used to extrapolate the detection effi-ciency to higher energies for neutrons emitted in the 13C(α,n)16O reaction.The theoretical angular distributions of the 13C(α,n)16O reaction were shown to be important in the estimation of the uncertainties of the detection efficiency.
文献关键词：
中图分类号：
作者姓名：
Yu-Tian Li;Wei-Ping Lin;Bing-Shui Gao;Han Chen;Hao Huang;Yu Huang;Tao-Yu Jiao;Kuo-Ang Li;Xiao-Dong Tang;Xin-Yu Wang;Xiao Fang;Han-Xiong Huang;Jie Ren;Long-Hui Ru;Xi-Chao Ruan;Ning-Tao Zhang;Zhi-Chao Zhang
作者机构：
CAS Key Laboratory of High Precision Nuclear Spectroscopy,Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory of Radiation Physics and Technology of the Ministry of Education,Institute of Nuclear Science and Technology,Sichuan University,Chengdu 610064,China;Joint Department for Nuclear Physics,Lanzhou University and Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;Sino-French Institute of Nuclear Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,China;China Institute of Atomic Energy,Beijing 102413,China
文献出处：
引用格式：
[1]Yu-Tian Li;Wei-Ping Lin;Bing-Shui Gao;Han Chen;Hao Huang;Yu Huang;Tao-Yu Jiao;Kuo-Ang Li;Xiao-Dong Tang;Xin-Yu Wang;Xiao Fang;Han-Xiong Huang;Jie Ren;Long-Hui Ru;Xi-Chao Ruan;Ning-Tao Zhang;Zhi-Chao Zhang-.Development of a low-background neutron detector array)[J].核技术（英文版）,2022(04):10-18
A类：
borated,51V
B类：
Development,low,background,detector,array,was,developed,measure,cross,section,13C,16O,reaction,which,source,process,AGB,stars,Gamow,window,Ec,keV,China,Jinping,Underground,Laboratory,CJPL,consists,3He,proportional,counters,embedded,polyethylene,cube,Owing,deep,underground,location,shield,around,achieved,51Cr,used,determine,detection,efficiency,neutrons,energies,En,MeV,Geant4,simulations,are,shown,effectively,reproduce,experimental,results,They,were,extrapolate,higher,emitted,theoretical,angular,distributions,important,estimation,uncertainties
AB值：
0.546197
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