1. European XFEL Holzkoppel 4 22869 Schenefeld Germany
2. The Hamburg Centre for Ultrafast Imaging Luruper Chaussee 149 22761 Hamburg Germany
3. Department of Experimental Physics, Universität Hamburg Jungiusstraße 9 20355 Hamburg Germany
4. Institut für Physik Universität Rostock Albert-Einstein-Str. 23–24 18059 Rostock Germany
5. Stanford Institute for Materials and Energy Sciences SLAC National Accelerator Laboratory Menlo Park CA 94025 USA
6. Wigner Research Centre for Physics H-1525 Budapest Hungary
7. Leibniz-Institut für Katalyse Albert-Einstein-Str. 29a 18059 Rostock Germany
8. Chemical Sciences and Engineering Division Argonne National Laboratory 9700 S. Cass Ave 60439 Lemont IL USA
9. Faculty of Physics Adam Mickiewicz University ul. Uniwersytetu Poznańskiego 2 Poznań 61-614 Poland
10. Department of Chemistry Faculty of Sciences Universidad Autónoma de Madrid and IMDEA-Nanoscience Ciudad Universitaria de Cantoblanco 28049 Madrid Spain