含铀材料中~（232）U的γ能谱测定
Gamma-spectrometric determination of 232U in uranium-bearing materials
摘要：
各种含铀物品的232 U含量是使用低本底伽马能谱测量的。该方法与测量几何形状、样品形式和化学成分无关。由于铀-232是一种人工制造的同位素，它携带了有关材料先前辐照的信息，这与核法医学、核保障监督和核反应堆操作有关。研究样品的~（232）U含量与~（235）U富集度之间的相关性与理论预测一致。它还显示了如何232 U/235 U与235 U含量的质量比的相关性，可以用来区分材料与后处理铀制成的后处理铀污染。
英文摘要：
The 232U content of various uranium-bearing items was measured using low-background gamma spectrometry. The method is independent of the measurement geometry, sample form and chemical composition. Since 232U is an artificially produced isotope, it carries information about previous irradiation of the material, which is relevant for nuclear forensics, nuclear safeguards and for nuclear reactor operations. A correlation between the 232U content and 235U enrichment of the investigated samples has been established, which is consistent with theoretical predictions. It is also shown how the correlation of the mass ratio 232U/235U vs. 235U content can be used to distinguish materials contaminated with reprocessed uranium from materials made of reprocessed uranium.
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