1. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
2. Department of Physics, University of Ottawa, 150 Louis Pasteur, Ottawa, Ontario K1N 6N5, Canada
3. European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
4. Deutsches Elektronen-Synchrotron (DESY), 22607 Hamburg, Germany
5. J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
6. Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
7. School of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
8. Sorbonne Université, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France
9. Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette, France
10. Daresbury Laboratory, Daresbury, Warrington, Cheshire WA4 4AD, United Kingdom