元素级联γ射线的符合测量技术

Coincident Measurement of γ Cascade for Element

介绍了一种符合测量技术,可极大地抑制康普顿坪和逃逸峰,从而凸显全能峰,使数据分析变得更为简单。该技术利用元素释放的级联衰变γ射线,用满足峰与峰相加的幅度信号作为符合信号,将符合信号作为门输入与原输入信号再进行符合即可得到凸显元素特征的不带康普顿坪的γ能谱。通过符合窗的选取,该技术可在复杂的辐射场中对特定元素进行选择性测量。

A technique of coincidence measurement was presented to enhance full-energy peak by strongly depressing the Compton platform and escape-peaks and thus simplified the analysis. It took the sum of full-energy-peaks of the γ cascade of certain element as gate signals to pick out full-energy γ-ray peaks for certain element, and spectra without Compton platform were obtained. According to certain coincidence windows, γ-rays of an element can be picked out from complicated γ-ray field.