Miscibility gap in the U-Nd-O phase diagram: a new approach of nuclear oxides in the environment?
To some extent, rare-earth-doped UO(2) is representative of an irradiated nuclear fuel. The two phases we observed previously in neodymium-doped UO(2) are now interpreted as the existence of a miscibility gap in the U-Nd-O phase diagram using new results obtained with Raman spectroscopy. Extrapolating the miscibility gap in the U-Nd-O phase diagram to irradiated UO(2) opens the path to a new understanding of nuclear oxides in the environment.
CEA/DEN/DEC, Bat. 352 Cadarache, 13108 Saint Paul lez Durance, France. lionel.desgranges@cea.fr
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Desgranges
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Pontillon
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Matheron
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Marcet
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Simon
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Guimbretière
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Porcher