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Application of laser ionization mass spectrometry for measurement of uranium isotope ratio in nuclear forensics and nuclear safeguards

机译：激光电离质谱法在核法医学和核保护中测量铀同位素比例的测量

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The uranium isotope ratio of both bulk material and individual particles provides important information for nuclear safeguards and nuclear forensics. As a rapid in situ analytical technique, laser ionization mass spectrometry (LIMS) was used to determine the uranium isotope ratio of solid bulk samples and single particles of U3O8. The results of measuring bulk samples showed excellent agreement with certified values. The deviation was less than 1% and the uncertainty of measurement was less than 5%. The uranium isotope ratio of single particles with diameters of about 50 mu m was measured by scanning electron microscopy (SEM) combined with LIMS. According to our research, LIMS has demonstrated promising uses in uranium isotope analysis in nuclear forensics and nuclear safeguards.
机译：散装材料和个体粒子的铀同位素比例为核保护和核法医提供了重要信息。 作为一种快速原位分析技术，使用激光电离质谱（LIMS）来确定固体批量样品和单颗粒的U3O8的铀同位素比。 测量批量样品的结果显示出与认证价值观的良好协议。 偏差小于1％，测量的不确定度小于5％。 通过扫描电子显微镜（SEM）与LIMS结合测量直径约50μm直径的单颗粒的铀同位素比。 根据我们的研究，LIMS已经证明了核法医学和核保护铀同位素分析中的有希望的用途。

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