1. CNRS, Université Clermont Auvergne, IRD, UJM, Laboratoire Magmas et Volcans, F-63000 Clermont-Ferrand, France
2. University Lyon, UJM-Saint-Etienne, UCA, CNRS, IRD, LMV UMR 6524, F-42023 SAINT-ETIENNE, France
3. ICSM, CEA, CNRS, ENSCM, University Montpellier, Marcoule, France
4. CSNSM, JANNuS-Orsay/SCALP, University Paris-Sud, CNRS/IN2P3, Orsay, France
5. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Nuclear Waste Management and Reactor Safety (IEK-6), D-52425 Jülich, Germany
6. Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, U.S.A.
7. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, U.S.A.
8. CEA, DEN, DE2D, SEVT, LMPA BP 17171, 30207 Bagnols-sur-Ceze Cedex, France