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热中子与物质产生辐射俘获反应时,发出瞬发γ射线,用高分辨率锗半导体探测器测量瞬发γ能谱,进行能量和强度分析,从而达到识别元素及确定含量的目的,此即瞬发γ射线中子活化分析,简称PGNAA。由于~(252)Cf中子源和锗探测器的发展,PGNAA作为堆中子活化分析
When thermal neutron and material produce radiation trapping reaction, it emits instantaneous gamma rays, and uses instantaneous γ energy spectrum with high-resolution germanium semiconductor detector to analyze the energy and intensity so as to achieve the purpose of identifying elements and determining the content. That is, Instant gamma-ray neutron activation analysis, referred to as PGNAA. Due to the development of ~ (252) Cf neutron source and germanium detector, PGNAA as a heap neutron activation analysis