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Nuclear forensic signatures and structural analysis of uranyl oxalate, its products of thermal decomposition and Fe impurity dopant

DOI: 10.1007/s10967-020-07538-2 DOI Help

Authors: Nathan B. A. Thompson (University of Sheffield) , Martin R. Stennett (AWE) , Matthew R. Gilbert (AWE) , Neil C. Hyatt (University of Sheffield)
Co-authored by industrial partner: Yes

Type: Journal Paper
Journal: Journal Of Radioanalytical And Nuclear Chemistry , VOL 309

State: Published (Approved)
Published: January 2021
Diamond Proposal Number(s): 24074

Open Access Open Access

Abstract: Uranyl oxalate (UO2C2O4·xH2O) 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 UO2C2O4·3H2O and phase analysis of its thermal products are examined. Their morphologies are discussed with respect to a matrix of solution processing conditions.

Journal Keywords: Uranyl oxalate; Morphology; Nuclear forensics; Signatures; Iron impurity

Subject Areas: Chemistry

Instruments: B18-Core EXAFS

Added On: 21/01/2021 08:43


Discipline Tags:

Earth Sciences & Environment Radioactive Materials Chemistry Materials Science Nuclear Waste

Technical Tags:

Spectroscopy X-ray Absorption Spectroscopy (XAS)