The spacing of intergranular fission gas bubbles in irradiated UO2 |
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| Affiliation: | 1. Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina;2. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina;3. Instituto de Astronomía Teórica y Experimental (IATE-CONICET), Laprida 854, Córdoba 5000, Argentina |
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| Abstract: | A simple diffusion model is used to demonstrate that irregularly spaced intergranular fission gas bubbles tend to migrate towards regions of unoccupied grain boundary. In consequence it is concluded that coalescence of these bubbles by random migration is unimportant and that, in modelling gas release and swelling, the grain face bubbles may be assumed to remain descrete until they can no longer be accommodated without overlapping. |
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