Popel, A. J. and Lebedev, V.A. and Martin, P.G. and Shiryaev, A.A. and Lampronti, G. I. and Springell, R. and Kalmykov, S.N. and Scott, T.B. and Monnet, I. and Grygiel, C. and Farnan, I. (2016) Structural effects in UO2 thin films irradiated with fission-energy Xe ions. Journal of Nuclear Materials, 482. pp. 210-217. ISSN 0022-3115 DOI https://doi.org/10.1016/j.jnucmat.2016.10.024
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Abstract
Uranium dioxide thin films have been successfully grown on LSAT (Al10La3O51Sr14Ta7) substrates by reactive magnetron sputtering. Irradiation by 92 MeV 129Xe23+ ions to simulate fission damage that occurs within nuclear fuels caused microstructural and crystallographic changes. Initially flat and continuous thin films were produced by magnetron sputtering with a root mean square roughness of 0.35 nm determined by AFM. After irradiation, this roughness increased to 60–70 nm, with the films developing discrete microstructural features: small grains (∼3 μm), along with larger circular (up to 40 μm) and linear formations with non-uniform composition according to the SEM, AFM and EDX results. The irradiation caused significant restructuring of the UO2 films that was manifested in significant film-substrate mixing, observed through EDX analysis. Diffusion of Al from the substrate into the film in unirradiated samples was also observed.
Item Type: | Article |
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Uncontrolled Keywords: | 2016AREP; IA71 |
Subjects: | 03 - Mineral Sciences |
Divisions: | 03 - Mineral Sciences 07 - Gold Open Access |
Journal or Publication Title: | Journal of Nuclear Materials |
Volume: | 482 |
Page Range: | pp. 210-217 |
Identification Number: | https://doi.org/10.1016/j.jnucmat.2016.10.024 |
Depositing User: | Sarah Humbert |
Date Deposited: | 11 Apr 2017 20:55 |
Last Modified: | 11 Apr 2017 20:55 |
URI: | http://eprints.esc.cam.ac.uk/id/eprint/3922 |
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