Uranyl oxalate (UO 2 C 2 O 4 ·xH 2 O) may exist at the back-end of the nuclear fuel cycle (NFC) as an intermediate in spent fuel reprocessing. The conditions used in aqueous reprocessing and thermal treatment can affect the physical and chemical properties of the material. Furthermore, trace impurities, such as Fe, may incorporate into the structure of these materials. In nuclear forensics, understanding relationships between processing variables aids in determination of provenance and processing history. In this study, the thermal decomposition of UO 2 C 2 O 4 ·3H 2 O and phase analysis of its thermal products are examined. Their morphologies are discussed with respect to a matrix of solution processing conditions.

中文翻译：

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草酸铀酰、其热分解产物和铁杂质掺杂剂的核法医学特征和结构分析

草酸铀酰 (UO 2 C 2 O 4 ·xH 2 O) 可能作为乏燃料后处理的中间体存在于核燃料循环 (NFC) 的后端。水处理和热处理中使用的条件会影响材料的物理和化学特性。此外，痕量杂质，例如 Fe，可能会掺入这些材料的结构中。在核取证中，了解加工变量之间的关系有助于确定来源和加工历史。在本研究中，研究了UO 2 C 2 O 4 ·3H 2 O 的热分解及其热产物的相分析。它们的形态是相对于溶液处理条件矩阵进行讨论的。