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本文介绍了脉冲形状甄别液体闪烁体的制备方法。通过原材料和容器的分析,用实验验证了各种因素对n,γ分辨性能和光输出的影响,设计了一种玻璃容器。采用这种方法制得的脉冲形状甄别液体闪烁体,最大尺寸可做到φ106×50毫米。采用饱和法在φ46×20和φ106×50的脉冲形状甄别液体闪烁体,分别用56 AVP和58 AVP光电倍增管和Po-Be中子源测量,在γ射线和中子谱分得比较满意的情况下,其中子能量分别可到350和500千电子伏。
This article describes the pulse shape of the preparation of liquid scintillation screening method. Through the analysis of raw materials and containers, the influence of various factors on the n, γ resolution performance and light output was experimentally verified, and a glass container was designed. Pulsed shape-discriminating liquid scintillators made by this method can be made to a maximum size of φ106 × 50 mm. The liquid scintillator was screened by the saturation method in the pulse shape of φ46 × 20 and φ106 × 50, measured by 56 AVP and 58 AVP photomultiplier tubes and Po-Be neutron source, respectively. The γ-ray and neutron spectra were relatively satisfactory In the case, its neutron energy can reach 350 and 500 keV respectively.