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电子探针显微分析（Electron Probe Micro-Analyze, EPMA）作为一种高空间分辨率的微区分析技术，旨在实现对辐照后核燃料中裂变气体Xe的浓度分布、局部富集及迁移行为的准确分析，并揭示辐照损伤对燃料性能的影响。EPMA通过测量X射线的特征谱线，对Xe进行定性和定量分析，并结合透射电镜（Transmission Electron Microscope, TEM）和二次离子质谱仪（Secondary Ion Mass Spectrometry, SIMS）等其他分析技术，以获取更全面的裂变气体行为信息。本文系统总结近年来EPMA在辐照后核燃料Xe浓度分析中的应用，探讨影响分析准确性的关键因素（如样品制备、仪器参数及数据处理方法等），并评述了提高分析精度的优化方法。通过优化实验条件、改进数据处理算法及结合互补分析技术，可显著提升EPMA的定量准确性。未来，EPMA与其他技术的联用将进一步深化对裂变气体行为的理解，为核燃料性能评估提供更可靠的数据支持。
Abstract：Electron Probe Micro-Analyze(EPMA),as a high spatial resolution micro-area analysis technique,aims to accurately analyze the concentration distribution,local enrichment and migration behavior of fission gas Xe in irradiated nuclear fuel,and reveal the impact of irradiation damage on fuel performance.EPMA qualitatively and quantitatively analyzes Xe by measuring the characteristic spectral lines of X-rays,and combines other analysis techniques such as Transmission Electron Microscope(TEM) and Secondary Ion Mass Spectrometry(SIMS) to obtain more comprehensive information on the behavior of fission gases.This paper systematically summarizes the application of EPMA in the analysis of Xe concentration in irradiated nuclear fuel in recent years,discusses the key factors affecting the accuracy of the analysis(such as sample preparation,instrument parameters and data processing methods,etc.),and reviews the optimization methods to improve the analysis accuracy.By optimizing experimental conditions,improving data processing algorithms and combining complementary analysis techniques,the quantitative accuracy of EPMA can be significantly improved.In the future,the combination of EPMA with other techniques will further deepen the understanding of the behavior of fission gases and provide more reliable data support for the performance evaluation of nuclear fuel.
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基本信息:
中图分类号:TL34
引用信息:
[1]高溶嵘,宋武林,程焕林,等.电子探针显微分析技术应用于辐照后核燃料裂变气体Xe检测的研究现状[J].分析仪器,2026,No.264(01):1-8.
基金信息:
中核集团青年英才基金（FY020260623317）