Accurate calculation of total efficiency of Ge well-type detectors suitable for efficiency calibration using common standard sources
Accurate calculation of total efficiency of Ge well-type detectors suitable for efficiency calibration using common standard sources
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准确计算适合使用通用标准源进行效率校准的Ge井型探测器的总效率
DOI：
10.1016/s0168-9002(00)00254-0
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
O. Sima
中科院分区：
文献类型：
--
作者：
O. Sima
本文提出了一种计算Ge井型探测器几何结构中适用于γ光谱测量的符合相加修正的新方法。该方法以探测器总效率的简单公式为基础，使用平均探测器厚度的精确解析关系，结合描述源中以及源与探测器之间的材料相互作用的近似公式。该方法可以方便地用60Co和88Y的普通混合γ标准源获得的实验定标数据建立Ge井型探测器的校正后的非核素效率定标曲线。
A new method for the calculation of coincidence summing out corrections appropriate for γ-spectrometry measurements in the Ge well-type detector geometry is proposed. The method is based on a simple formula for the total efficiency of the detector, using an exact analytical relation for the mean detector thickness, combined with approximate formulas describing the interactions in the source and in the materials interposed between the source and the detector. The method can be easily applied for establishing the corrected, nuclide independent, efficiency calibration curves of Ge well-type detectors using experimental calibration data obtained with the common mixed γ-ray standard source containing60Co and88Y.