arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1407.0799physics.ins-detphysics.atom-ph
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基于物理作用机制的闪烁探测器Gamma-ray半经验响应函数

A semi-empirical response function for Gamma-ray of Scintillation detector based on physical interaction mechanism

Zhe Li, Yiwen Zhang, Shifeng Sun, Baoyi Wang, Long Wei

摘要:

与半导体探测器相比,闪烁探测器对γ射线的能量分辨率较低,对传统的γ射线能谱分析方法提出了更高的要求。建立了描述闪烁探测器在0.5 ~ 1.5MeV入射γ射线能量范围内响应函数的模型,并将其应用于辐射源谱的拟合。描述γ能谱特征的各种函数形式都是基于对基本相互作用机制的分析。利用加权最小二乘拟合法对实验光谱进行拟合,得到DRF模型中的参数。高斯标准差可以通过单独的程序计算出来。通过拟合CsI(Tl)探测器测得的Co-60和Cs-137光谱,并与归一化的等效测量光谱进行比较,验证了DRF模型的有效性。

英文摘要:

Scintillation detector has lower energy resolution for Gamma-ray as compared to semiconductor detector, better spectra analysis method is essential to traditional method. A model for describing the response function of scintillation detector over the range of incident Gamma-ray energies between 0.5 and 1.5 MeV has been established and applied to fitting radiation sources spectra. Each function form for describing the feature of Gamma-ray spectra are based on the analysis of fundamental interaction mechanism. These functions are combined to form a DRF model to fit experiment spectra by weighted least squares fitting method, parameters in this model are obtained simultaneously. Gaussian standard deviation can be calculated out by an individual procedure. Validity of the DRF model is demonstrated by fitting Co-60 and Cs-137 spectra measured by CsI(Tl) detector and comparing them to the normalized equivalent measured spectrum.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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