Title: Growth Mechanisms of Interstitial Loops in Alpha-doped UO2 Samples
Authors: JONNET J.VAN UFFELEN PAULWISS THIERRYSTAICU DRAGOSREMY B.REST J.
Citation: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIO vol. 266 p. 3008-3012
Publisher: ELSEVIER SCIENCE BV
Publication Year: 2008
JRC Publication N°: JRC46380
ISSN: 0168-583X
URI: http://www.elsevier.com/locate/nimb
http://publications.jrc.ec.europa.eu/repository/handle/JRC46380
DOI: 10.1016/j.nimb.2008.03.154
Type: Contributions to Conferences
Abstract: New experimental size distributions are presented for interstitial-type dislocation loops in (U,Pu)O2 samples after 4 and 7 years of self-irradiation along with a new model. For this model, the work of Hayns has been extended to doped materials and to take into account additional phenomena, namely re-solution and coalescence as applied to gas bubble precipitation. The calculations are compared to the experimental size distributions obtained by means of Transmission Electron Microscopy for two different storage times. The role of re-solution and coalescence is discussed based on this model. This constitutes a basis for modelling the high burn-up structure (HBS) formation which is a consequence of the accumulation of radiation damage in nuclear fuels.
JRC Institute:Institute for Transuranium Elements

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