1. Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, D-22607 Hamburg, Germany
2. Facultad de Ciencia y Tecnología, Universidad del País Vasco (UPV-EHU), E-48940 Leioa, Spain
3. Ikerbasque,
Basque
Foundation for Science, E-48013 Bilbao, Spain
4. Institute of Physical Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Straße 1, D-24118 Kiel, Germany
5. The Hamburg Centre for Ultrafast Imaging at the University of Hamburg, D-22761 Hamburg, Germany