1. Department of Physics
2. University of Trieste
3. 34127 Trieste
4. Italy
5. University of Hamburg
6. D-20355 Hamburg
7. Germany
8. Institute of Physics
9. Department of Earth Sciences
10. Thomas Young Center
11. University College London
12. London WC1E 6BS
13. UK
14. Elettra-Sincrotrone Trieste S.C.p.A.
15. 34149 Trieste