Chemical and elemental mapping of spent nuclear fuel sections by soft X‐ray spectromicroscopy

• Published in: Journal of synchrotron radiation Vol. 29; no. 1; pp. 67 - 79
• Main Authors: Ditter, Alexander Scott, Smiles, Danil E., Lussier, Daniel, Altman, Alison B., Bachhav, Mukesh, He, Lingfeng, Mara, Michael W., Degueldre, Claude, Minasian, Stefan G., Shuh, David K.
• Format: Journal Article
• Language: English
• Published: 5 Abbey Square, Chester, Cheshire CH1 2HU, England International Union of Crystallography 01.01.2022; John Wiley & Sons, Inc; International Union of Crystallography (IUCr)
• Subjects: Actinide Physics and Chemistry; Atom probe analysis; Bulk sampling; Fission products; focused ion beam sections; INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Ion beams; Microscopy; NUCLEAR FUEL CYCLE AND FUEL MATERIALS; Nuclear fuels; Oxidation; oxygen K-edge; Radioactive wastes; Spectroscopy; spent nuclear fuel; Spent nuclear fuels; STCM; STXM; Uranium; Uranium dioxide; Uranium oxides; Valence; oxygen K-edge; STXM; focused ion beam sections; spent nuclear fuel

Soft X‐ray spectromicroscopy at the O K‐edge, U N4,5‐edges and Ce M4,5‐edges has been performed on focused ion beam sections of spent nuclear fuel for the first time, yielding chemical information on the sub‐micrometer scale. To analyze these data, a modification to non‐negative matrix factorization...