Effect of molybdenum on the behaviour of caesium in uranium dioxide at high temperature

C. Panetier, L. Sarrasin,C. Gaillard,Y. Pipon,T. Wiss,A. Benedetti,O. Dieste,D. Mangin, R. Ducher,R. Dubourg,N. Moncoffre

Journal of Nuclear Materials（2021）

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摘要

•The effect of a metallic fission product on Cs behaviour and its release in UO2 was investigated as a relevant aspect of fuel safety•Mo and Cs were co-implanted in UO2•Mo metallic precipitates anchor Cs bubbles and hinder their migration•The role of dislocations on the nucleation of bubbles and metallic precipitates is highlighted

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关键词

Caesium,Molybdenum,UO2,Bubble-precipitate pairs,Thermal annealing

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