1. Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
2. Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
3. Department of Physics, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
4. Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
5. LIDYL, CNRS, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
6. Department of Chemistry, Universität Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany