Interest in analyzing the enrichment of uranium waste in drums, which are generated by a nuclear fuel manufacturer, has recently been growing in South Korea. However, high-purity germanium (HPGe) and thallium-doped sodium iodide [NaI(Tl)] that are used to measure uranium enrichment require much time to measure drum size samples because large-area detectors cannot be manufactured due to the limitation of single-crystal growing technologies and the cost. To overcome these limitations, a uranium enrichment analysis device using plastic scintillators is intended to be developed. A screening device using large-area plastic scintillator which is similar to radiation portal monitor is considered for an intermediate- or a low-level uranium waste drum. The capability of plastic scintillators for this application was studied on a small scale by measuring different enrichments of uranium samples using a 2-in plastic scintillator, a 2-in NaI(Tl) scintillator, and an HPGe detector. The results show that the plastic scintillator was able to distinguish between the enrichments of the uranium samples although the efficiency of the plastic scintillator was low. It is expected that this result could be applied to the enrichment analysis of drums containing uranium wastes using large area plastic scintillators in further studies.

中文翻译：

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使用塑料闪烁体测定铀浓缩

最近，韩国对分析由核燃料制造商生产的桶中铀废物的浓缩情况越来越感兴趣。然而，用于测量铀浓缩的高纯锗（HPGe）和掺铊碘化钠[NaI(Tl)]需要大量时间来测量鼓大小的样品，因为由于单一的限制，无法制造大面积探测器。 -晶体生长技术和成本。为了克服这些限制，打算开发一种使用塑料闪烁体的铀浓缩分析装置。中低放铀废料桶考虑采用类似于辐射门式监测器的大面积塑料闪烁体筛分装置。通过使用 2 英寸塑料闪烁体、2 英寸 NaI(Tl) 闪烁体和 HPGe 探测器测量铀样品的不同富集程度，对塑料闪烁体在此应用中的能力进行了小规模研究。结果表明，尽管塑料闪烁体的效率较低，但塑料闪烁体能够区分铀样品的富集。预计该结果可用于在进一步研究中使用大面积塑料闪烁体对含有铀废物的桶进行富集分析。结果表明，尽管塑料闪烁体的效率较低，但塑料闪烁体能够区分铀样品的富集。预计该结果可用于在进一步研究中使用大面积塑料闪烁体对含有铀废物的桶进行富集分析。结果表明，尽管塑料闪烁体的效率较低，但塑料闪烁体能够区分铀样品的富集。预计该结果可应用于在进一步研究中使用大面积塑料闪烁体对含有铀废物的桶进行富集分析。