A study of xenon aggregates in uranium dioxide using X-ray absorption spectroscopy
X-ray absorption spectroscopy experiments were performed on a set of xenon implanted uranium dioxide samples. Results indicate that the gas forms highly pressurised inclusions as a result of temperature anneals or an external ion irradiation. Estimated bubble pressures were found to be in the region...
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| Veröffentlicht in: | Journal of nuclear materials 2006-06, Vol.352 (1-3), p.136-143 |
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| container_end_page | 143 |
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| container_issue | 1-3 |
| container_start_page | 136 |
| container_title | Journal of nuclear materials |
| container_volume | 352 |
| creator | Garcia, P. Martin, P. Carlot, G. Castelier, E. Ripert, M. Sabathier, C. Valot, C. D’Acapito, F. Hazemann, J-L. Proux, O. Nassif, V. |
| description | X-ray absorption spectroscopy experiments were performed on a set of xenon implanted uranium dioxide samples. Results indicate that the gas forms highly pressurised inclusions as a result of temperature anneals or an external ion irradiation. Estimated bubble pressures were found to be in the region of 2–5GPa at low temperature. The consequences of such high pressures developing within intra-granular bubbles in irradiated fuels are discussed. A model is given enabling the computation of the sink strengths of bubbles as a function of the pressure of the rare-gas they contain. The model predicts that for pressure values found in the experiments, fission gas bubbles do not act as sinks for diffusing rare-gas atoms. |
| doi_str_mv | 10.1016/j.jnucmat.2006.02.047 |
| format | Article |
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Results indicate that the gas forms highly pressurised inclusions as a result of temperature anneals or an external ion irradiation. Estimated bubble pressures were found to be in the region of 2–5GPa at low temperature. The consequences of such high pressures developing within intra-granular bubbles in irradiated fuels are discussed. A model is given enabling the computation of the sink strengths of bubbles as a function of the pressure of the rare-gas they contain. The model predicts that for pressure values found in the experiments, fission gas bubbles do not act as sinks for diffusing rare-gas atoms.</description><subject>Applied sciences</subject><subject>Chemical Sciences</subject><subject>Condensed Matter</subject><subject>Cristallography</subject><subject>Energy</subject><subject>Energy. 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| source | Access via ScienceDirect (Elsevier) |
| subjects | Applied sciences Chemical Sciences Condensed Matter Cristallography Energy Energy. Thermal use of fuels Exact sciences and technology Fission nuclear power plants Installations for energy generation and conversion: thermal and electrical energy Material chemistry Materials Science Physics |
| title | A study of xenon aggregates in uranium dioxide using X-ray absorption spectroscopy |
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