伽玛能谱学的新方法:提高分辨率的双晶闪烁光谱仪

Nuclear Instruments Pub Date : 1958-08-01 DOI:10.1016/0369-643X(58)90092-6

A.M. Hoogenboom

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引用次数: 115

摘要

提出了一种测量级联衰变中伽马辐射光谱的新方法。使用双晶闪烁光谱仪和门控多通道分析装置。由两个晶体光电倍增管组合的输出之和产生的脉冲由单通道差分鉴别器选择。当和脉冲对应于级联中可用的全部能量在晶体中的释放时，该微分鉴别器的输出将为多通道分析仪打开门。所显示的光谱是两个探测器中任意一个的光谱。该技术最重要的特点是:1.(a)只检测到“全能量”峰;2.(b)在更高的伽马射线能量下获得了更高的分辨率;3.(c)一个γ-γ或p-γ-γ角相关实验确定了给定能级上所有双级联去激发的伽马射线的角相关。给出了操作细节和典型光谱。有人建议将这种技术称为“和-巧合”法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A new method in gamma-ray spectroscopy: A two crystal scintillation spectrometer with improved resolution

A new method has been developed to measure the spectra of gamma radiation emitted in cascade disintegrations. Use is made of a two-crystal scintillation spectrometer and a gated multi-channel analysing device. The pulses produced by summing the outputs of the two crystal-photomultiplier combinations are selected by a single-channel differential discriminator. The output of this differential discriminator gates the multi-channel analyser whenever the sum pulse corresponds to the release in the crystals of the full energy available in the cascade. The spectrum displayed is that of either of the two detectors. The most important features of the technique are:

1.
(a) only “full-energy” peaks are detected;
2.
(b) improved resolution is obtained especially at higher gamma-ray energies;
3.
(c) one γ-γ or p-γ-γ angular correlation experiment determines the angular correlation of the gamma rays of all double cascades deexciting a given level.

Details of operation and typical spectra are presented. It is suggested that the technique be called the “sum-coincidence” method.

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