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Helium behaviour in UO2 through low fluence ion implantation studies

hal.structure.identifierDépartement d'Etudes des Combustibles [DEC]
dc.contributor.authorGARCIA, P.
hal.structure.identifierRadioactivite Environnement [RADEN]
dc.contributor.authorGILABERT, E.
hal.structure.identifierDépartement d'Etudes des Combustibles [DEC]
dc.contributor.authorMARTIN, G.
hal.structure.identifierDépartement d'Etudes des Combustibles [DEC]
dc.contributor.authorCARLOT, G.
hal.structure.identifierDépartement d'Etudes des Combustibles [DEC]
dc.contributor.authorSABATHIER, C.
hal.structure.identifierConditions Extrêmes et Matériaux : Haute Température et Irradiation [CEMHTI]
dc.contributor.authorSAUVAGE, T.
hal.structure.identifierConditions Extrêmes et Matériaux : Haute Température et Irradiation [CEMHTI]
dc.contributor.authorDESGARDIN, P.
hal.structure.identifierConditions Extrêmes et Matériaux : Haute Température et Irradiation [CEMHTI]
dc.contributor.authorBARTHE, M.-F.
dc.date.issued2014
dc.identifier.issn0168-583X
dc.description.abstractEnIn this work we focus on experiments involving implantation of 500 keV 3He ions in sintered polycrystalline material. Samples are implanted at low fluences (∼2 ×1013 ions/cm2) and subsequently isothermally annealed in a highly sensitive thermal desorption spectrometry (TDS) device PIAGARA (Plateforme Interdisciplinaire pour l'Analyse des GAz Rares en Aquitaine). The helium fluencies studied are two to three orders of magnitude lower than previous Nuclear Reaction Analysis (NRA) experiments carried out on identical samples implanted at identical energies. The fractional release of helium obtained in the TDS experiments is interpreted using a three-dimensional axisymmetric diffusion model which enables results to be quantitatively compared to previous NRA data. The analysis shows that helium behaviour is qualitatively independent of ion fluency over three orders of magnitude: helium diffusion appears to be strongly inhibited below 1273 K within the centre of the grains presumably as a result of helium bubble precipitation. The scenario involving diffusion at grain boundaries and in regions adjacent to them observed at higher fluencies is quantitatively confirmed at much lower doses. The main difference lies in the average width of the region in which uninhibited diffusion occurs.
dc.language.isoen
dc.publisherElsevier
dc.subject.enHelium
dc.subject.enUranium dioxide
dc.subject.enThermal desorption spectroscopy
dc.title.enHelium behaviour in UO2 through low fluence ion implantation studies
dc.typeArticle de revue
dc.identifier.doi10.1016/j.nimb.2013.11.042
dc.subject.halChimie/Matériaux
bordeaux.journalNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
bordeaux.page113-116
bordeaux.volume327
bordeaux.peerReviewedoui
hal.identifierin2p3-01019667
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-01019667v1
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