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Simulation of "radiation sealing" of an intergrain boundary and the influence of this effect on the release of gaseous fission products from UO sub(2)
A new model is developed for radiation sealing of intergrain boundaries under low-temperature irradiation conditions. The model agrees with the physical concepts concerning the mechanisms of athermal diffusion and radiation re-solution of gas bubbles. The model makes it possible to explain the exper...
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Published in: | Atomic energy (New York, N.Y.) N.Y.), 2000-06, Vol.88 (6), p.462-469 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | A new model is developed for radiation sealing of intergrain boundaries under low-temperature irradiation conditions. The model agrees with the physical concepts concerning the mechanisms of athermal diffusion and radiation re-solution of gas bubbles. The model makes it possible to explain the experimentally observed sharp irradiation temperature dependence of gas release at low temperatures, even though the athermal radiation-stimulated transfer mechanisms predominate. The model was integrated into a mechanistic RTOP code and verified on experimental data, including Halden project data. 2 figures, 25 references. |
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ISSN: | 1063-4258 1573-8205 |
DOI: | 10.1007/BF02673469 |