[1] European Commiss, DG Joint Res Ctr, Via E Fermi 2749, I-21027 Ispra, VA, Italy
[2] Univ Claude Bernard Lyon 1, Univ Lyon 1, ICBMS, CNRS,UMR 5246, 43 Blvd 11 Novembre 1918, F-69622 Villeurbanne, France
[3] Diamond Light Source, Didcot OX11 0DE, Oxon, England