1. Department of Physics and Astronomy
2. University of Florence and INSTM Research Unit of Florence
3. I-50019 Sesto Fiorentino (FI)
4. Italy
5. CNRS
6. Univ. Bordeaux
7. Bordeaux INP
8. ICMCB
9. UMR 5026
10. ESRF-The European Synchrotron
11. Grenoble
12. France
13. Department of Chemistry “Ugo Schiff”