Heterogeneous nucleation of fission gas bubbles and gas migration in uranium dioxide
- 1 August 1972
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 26 (2) , 399-407
- https://doi.org/10.1080/14786437208227437
Abstract
The number and size of fission gas bubbles precipitated in irradiated uranium dioxide are calculated from a theory based on a balance between nucleation of bubbles at vacancy clusters produced by fission fragments and the agglomeration of bubbles by random motion. The distribution of bubble sizes is determined by gas atom capture, bubble agglomeration and irradiation re-solution. Irradiation re-solution exceeds gas atom capture for large bubbles and causes the larger bubbles formed by agglomeration to shrink. The effect of the precipitated gas bubbles on gas migration is considered, and it is shovrm that the bubble diffusion coefficient is likely to be larger than the trap-release diffusion coefficient. The predictions are compared with other theories of bubble nucleation, and with experimental observation.Keywords
This publication has 9 references indexed in Scilit:
- The role of vacancies and dislocations in the nucleation and growth of gas bubbles in irradiated fissile materialPublished by Elsevier ,2003
- On the formation of gas bubbles in fissile material during reactor irradiationPhilosophical Magazine, 1971
- The distribution of intragranular fission gas bubbles in UO2 during irradiationJournal of Nuclear Materials, 1971
- The re-solution of gas atoms from bubbles during the irradiation of UO2Journal of Nuclear Materials, 1970
- A Calculation on the Migration of Fission Gas in Material Exhibiting Precipitation and Re-solution of Gas Atoms Under IrradiationNuclear Science and Engineering, 1969
- Surface diffusion of oxides (A review)Journal of Nuclear Materials, 1969
- Migration of gas bubbles in irradiated uranium dioxideJournal of Nuclear Materials, 1967
- An analysis of the diffusion of fission gas bubbles and its effect on the behaviour of reactor fuelsJournal of Nuclear Materials, 1963
- The migration and coalescence of inert gas bubbles in metalsProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1963