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<p>Impurities in uranium ore concentrates (UOCs) serve as forensic signatures of processing history and origin. This study utilizes Electron Probe Microanalyzer (EPMA) to characterize microscale compositional and textural features in individual UOC particles from both commercial and bench-scale production. At the particle scale, multiple internal phases with distinct morphologies, chemical signatures, and stoichiometries are documented. Our data shows that chemical impurities are heterogeneously distributed within single particles and among particles within a sample. These microscale heterogeneities correlate with known processing histories, indicating that microscale signatures of early fuel cycle materials can provide valuable information for nuclear forensic material analysis.</p>

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Characterizing microscale signatures in uranium ore concentrates using electron probe microanalyzer

  • 期刊论文

  • 发表日期：

    2026年4月2日

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  • Christine F. Chan,
  • Joseph R. Boro,
  • Amy M. Gaffney,
  • Naomi E. Marks,
  • Rachel E. Lindvall,
  • Joseph R. Swider

摘要

Impurities in uranium ore concentrates (UOCs) serve as forensic signatures of processing history and origin. This study utilizes Electron Probe Microanalyzer (EPMA) to characterize microscale compositional and textural features in individual UOC particles from both commercial and bench-scale production. At the particle scale, multiple internal phases with distinct morphologies, chemical signatures, and stoichiometries are documented. Our data shows that chemical impurities are heterogeneously distributed within single particles and among particles within a sample. These microscale heterogeneities correlate with known processing histories, indicating that microscale signatures of early fuel cycle materials can provide valuable information for nuclear forensic material analysis.