1. PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
2. National Research Council of Canada, 100 Sussex Dr. Ottawa, ON K1A 0R6, Canada
3. School of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK
4. Synchrotron SOLEIL, l'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette, France
5. Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA
6. Daresbury Laboratory, Daresbury, Warrington, Cheshire WA4 4AD, UK