典型文献
A method for neutron-induced gamma spectra decomposition analysis based on Geant4 simulation
文献摘要：
In various monitoring and detection tools that use pulsed neutron generators as radiation sources,the gamma rays induced by the interaction with various nuclei at different stages of neutron transport can reflect infor-mation about the medium.These gamma rays are generated in two major interactions:inelastic scattering of fast neu-trons and radiative capture of thermal neutrons,corre-sponding to the inelastic and capture gamma rays,respectively.However,the two types of gamma rays that reflect different properties of the medium are difficult to collect by normal detectors independently.The proportion of the two gamma rays needs to be solved for the separa-tion of inelastic and capture gamma.Therefore,this study proposes an optimized spectra decomposition method to calculate the inelastic-to-capture ratio in the measured total gamma spectra based on the net inelastic and capture spectra obtained using the Geant4 simulation.Because the simulated data cannot reflect the energy resolution of the measured spectra,we introduce the Gaussian broadening function of the gamma detector while calculating the pro-portion of the spectra components,and achieve optimiza-tion of the proportion values and resolution parameters simultaneously.Based on the results,the total simulated spectra obtained by superimposing the broadened net inelastic and capture gamma spectra according to the cal-culated inelastic-to-capture ratio are in good agreement with their measured counterpart.
文献关键词：
中图分类号：
作者姓名：
Wei Tang;Jin-Gang Liang;Yi Ge;Qiong Zhang
作者机构：
University of Electronic Science and Technology of China,Chengdu 610000,China;Tsinghua University,Beijing 10000,China
文献出处：
引用格式：
[1]Wei Tang;Jin-Gang Liang;Yi Ge;Qiong Zhang-.A method for neutron-induced gamma spectra decomposition analysis based on Geant4 simulation)[J].核技术（英文版）,2022(12):36-48
A类：
B类：
method,induced,gamma,spectra,decomposition,analysis,Geant4,simulation,In,various,monitoring,detection,tools,that,pulsed,generators,radiation,sources,rays,by,nuclei,different,stages,transport,reflect,infor,mation,about,medium,These,are,generated,two,major,interactions,inelastic,scattering,fast,radiative,capture,thermal,neutrons,corre,sponding,respectively,However,types,properties,difficult,collect,normal,detectors,independently,proportion,needs,be,solved,separa,Therefore,this,study,proposes,optimized,calculate,ratio,measured,total,net,obtained,using,Because,simulated,data,cannot,energy,resolution,introduce,Gaussian,broadening,function,while,calculating,components,achieve,optimiza,values,parameters,simultaneously,Based,results,superimposing,broadened,according,culated,good,agreement,their,counterpart
AB值：
0.477281
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