Coupled effects of electronic and nuclear energy deposition in UO 2 crystals: a high-resolution XRD study carried out at the MARS beamline of the SOLEIL synchrotron facility - Axe 3 : organisation structurale multiéchelle des matériaux
Article Dans Une Revue Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms Année : 2024

Coupled effects of electronic and nuclear energy deposition in UO 2 crystals: a high-resolution XRD study carried out at the MARS beamline of the SOLEIL synchrotron facility

Gaëlle Gutierrez
Denis Menut
  • Fonction : Auteur
Arthur Georgesco
  • Fonction : Auteur
Claire Onofri
  • Fonction : Auteur
Jean-Luc Béchade
  • Fonction : Auteur
Aurélien Debelle
  • Fonction : Auteur

Résumé

For the first time at the SOLEIL synchrotron facility's MARS beamline, UO2 single-crystal-like samples underwent characterization, and strain depth profiles were established. Single crystals oriented along (110) and (111) were submitted to ion irradiation in the nuclear energy-loss regime (Sn) using 900 keV I2+ ions, and also with concomitant electronic energy deposition (Se) using 27 MeV Fe9+ ions. X-ray diffraction measurements were conducted at the MARS beamline, specialized for radioactive material analysis. High-angular-resolution reciprocal space maps around asymmetrical reflections and conventional symmetrical θ/2θ scans were recorded. Analysis with the RaDMaX software allowed retrieving the strain depth profiles. Results reveal that the Sn-irradiated surface layer exhibits tensile strain along its normal with no in-plane strain, that this normal strain is partially relaxed by Se. Both crystal orientations display similar behavior, but not with the same magnitude. Comparison with polycrystals indicates a more pronounced strain relaxation in the latter case.
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Dates et versions

hal-04698823 , version 1 (16-09-2024)

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Gaëlle Gutierrez, Alexandre Boulle, Denis Menut, Arthur Georgesco, Claire Onofri, et al.. Coupled effects of electronic and nuclear energy deposition in UO 2 crystals: a high-resolution XRD study carried out at the MARS beamline of the SOLEIL synchrotron facility. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2024, 557, pp.165491. ⟨10.1016/j.nimb.2024.165491⟩. ⟨hal-04698823⟩
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