He migration in implanted UO2 sintered disks
| Autor: | J.P. Piron, Marie-France Barthe, Philippe Garcia, G. Blondiaux, G. Carlot, Thierry Sauvage, C. Corbel, S. Guilbert, J.-M Gras, Pierre Desgardin |
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| Rok vydání: | 2004 |
| Předmět: |
Nuclear and High Energy Physics
Chemistry Annealing (metallurgy) Uranium dioxide Analytical chemistry chemistry.chemical_element Fluence Nuclear physics chemistry.chemical_compound Ion implantation Nuclear Energy and Engineering Nuclear reaction analysis Helium-3 General Materials Science Isotopes of helium Helium |
| Zdroj: | Journal of Nuclear Materials. 327:88-96 |
| ISSN: | 0022-3115 |
| DOI: | 10.1016/j.jnucmat.2004.01.024 |
| Popis: | The behaviour of helium implanted in sintered uranium dioxide disks has been investigated as a function of annealing temperature. UO2 disks have been implanted with 1 MeV 3He ions at a fluence of 1 × 1016 3He cm−2 using a Van der Graaff accelerator. These implantation conditions lead to a local helium concentration of 0.2 at.% at a depth of 1.9 μm in UO2. The 3He(d,α)1H Nuclear Reaction Analysis method was used to determine the helium depth profile after the various annealing stages. The experimental results measured after 1100 °C anneal were analysed using a simple model which satisfactorily reproduces the observed helium depth profile changes. The intragranular helium diffusion coefficient is estimated and the result is assessed against other data published in the open literature. |
| Databáze: | OpenAIRE |
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