Development of non-destructive elemental analysis using a gamma ray multiplicity filter and a neutron resonance

瞬发γ射线分析（PGA）是一种快速、无损的多元素定性定量分析技术。γ射线多重性已被测量并用于减少PGA中γ射线背景的干扰。大多数核素的中子俘获截面随中子动能的变化呈现出强烈的变化（共振）。为了进一步提高信噪比和灵敏度，发展了共振瞬发γ射线分析。

Prompt gamma-ray analysis (PGA) is a rapid, non-destructive and a analytical technique which can perform both qualitative and quantitative multi-element analysis. Gamma-ray multiplicities have been measured and used to reduce interference of gamma-ray background in PGA. The neutron capture cross sections of most nuclides exhibit strong variations (resonance) with the kinetic energy of neutron. For further improvements of the signal-to-noise ratio and sensitivity, prompt gamma-ray analysis by using resonance has been developed.