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dc.contributor.authorMARCHETTI Ilariaen_GB
dc.contributor.authorBELLONI Fabioen_GB
dc.contributor.authorHIMBERT Jeromeen_GB
dc.contributor.authorCARBOL Paulen_GB
dc.contributor.authorFANGHAENEL Thomasen_GB
dc.date.accessioned2012-04-17T19:49:36Z-
dc.date.available2011-01-14en_GB
dc.date.available2012-04-17T19:49:36Z-
dc.date.created2011-01-13en_GB
dc.date.issued2011en_GB
dc.date.submitted2010-03-30en_GB
dc.identifier.citationJOURNAL OF NUCLEAR MATERIALS vol. 408 no. 1 p. 54 - 60en_GB
dc.identifier.issn0022-3115en_GB
dc.identifier.uriwww.elsevier.com/locate/jnucmaten_GB
dc.identifier.urihttp://publications.jrc.ec.europa.eu/repository/handle/JRC57873-
dc.description.abstractOxygen and water diffusion in polycrystalline UO2 are key parameters to investigate in order to predict spent fuel behaviour in a final repository in the event of exposure to groundwater. In this work, 18O tracer diffusion is evaluated by means of secondary ion mass spectrometry on a UO2 pellet exposed to 18O-labelled water at room temperature for 3 months. Depth profiling up to 22 µm beneath the pellet surface clearly indicates a combination of oxygen diffusion into the UO2 lattice and water diffusion along grain boundaries, behaving as high diffusivity paths. The relevant coefficients have been estimated around 1.4*10-24 m2 s-1 for lattice diffusion and around 2.3*10-16 m2 s-1 for grain boundary diffusion.en_GB
dc.description.sponsorshipJRC.E.5-Nuclear chemistryen_GB
dc.format.mediumPrinteden_GB
dc.languageENGen_GB
dc.publisherELSEVIER SCIENCE BVen_GB
dc.relation.ispartofseriesJRC57873en_GB
dc.titleNovel insights in the study of water penetration into polycrystalline UO2 by secondary ion mass spectrometryen_GB
dc.typeArticles in periodicals and booksen_GB
dc.identifier.doi10.1016/j.jnucmat.2010.10.065en_GB
JRC Directorate:Nuclear Safety and Security

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