CAJ | 학술논문

建立了一种可用于γ射线能谱分析的CsI（Tl）闪烁体探测器响应函数（DRF）模型，并对0.05～1.5 MeV γ射线能谱进行了拟合。描述γ射线能谱特征的每个函数均是基于对射线作用机制的分析，采用权重最小二乘法实现了22 Na、60 Co、137 Cs、238 Pu实验能谱的拟合，并同时得到了函数中与射线能量相关的非线性参数。最后利用该DRF模型对CsI（Tl）探测器测量152 Eu源的γ射线能谱进行了拟合，结果表明，此DRF模型可较好地应用于γ射线能谱的分析。
건립료일충가용우γ사선능보분석적CsI（Tl）섬삭체탐측기향응함수（DRF）모형，병대0.05～1.5 MeV γ사선능보진행료의합。묘술γ사선능보특정적매개함수균시기우대사선작용궤제적분석，채용권중최소이승법실현료22 Na、60 Co、137 Cs、238 Pu실험능보적의합，병동시득도료함수중여사선능량상관적비선성삼수。최후이용해DRF모형대CsI（Tl）탐측기측량152 Eu원적γ사선능보진행료의합，결과표명，차DRF모형가교호지응용우γ사선능보적분석。
The detector response function (DRF) model of scintillation over the range of incident γ‐ray energy from 0.05 MeV to 1.5 MeV was established and applied to fit radiation source spectra . Each function for describing the feature of γ‐ray spectra is based on the analysis of fundamental interaction mechanism . These functions were combined to form a DRF model to fit 22 Na ,60 Co ,137 Cs ,238 Pu experiment spectra by weighted least square fitting method , and nonlinear parameters in this model were obtained simultaneously w hich are dependent on the source energy .T he validity of DRF model was demonstrated by fitting 152 Eu spectra measured by CsI (Tl) detector .The result show s that this model is useful to analyze γ‐ray spectrum .