本工作曾经搭建了高纯锗探测器阵列,用来测量(n,xn)反应产生的瞬发特征γ射线。本年度发展与完善了探测系统、获取系统和实验分析方法,改进了瞬发γ法实验测量条件。根据对瞬发γ射线法角分布问题的研究,调整了探测器摆放方式和距离(图1),可通过所设定的角度截面的组合表示全截面。在没有专用样品的情况下,找到4 This work has been to build a high-purity germanium detector array, used to measure the (n, xn) reaction generated by the instantaneous characteristics of gamma rays. This year, the development and improvement of the detection system, access to systems and experimental analysis methods, improved instantaneous γ method experimental measurement conditions. According to the research on the angular distribution of instantaneous γ-rays, we adjusted the way and distance of the detector (Figure 1). The total cross-section can be expressed by the combination of the set angle sections. In the absence of special samples, find 4