A number of publications and reports have identified a need to develop new signatures for characterizing the chemical history of actinide materials. Evaluation of morphology as a clue for understanding the process history of material has been suggested as well. Chemical signatures of actinide oxides may be indicative of nuclear processing conditions or may be modified following storage of the material under controlled conditions. We have engaged experimental and modelling tools to understand these signatures in bulk actinide oxide materials and to evaluate how the signatures could be modified over time. In comparison, signatures from released particulates may be sensitive to the release scenario and deposition conditions in the environment, and we have reported on the characterization of environmental actinide samples. Our studies to measure morphologic and chemical signatures from both bulk measurements and images sensitive to spatial relationships on mesoscale materials will be discussed.

Interpretation of morphologic and chemical signatures from actinide oxide materials

253rd National Meeting (2017)

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