1. Institut für Physikalische Chemie, Universität Hamburg, 20148 Hamburg, Germany
2. Institut für Theoretische Physik, Technische Universität Berlin, 10623 Berlin, Germany
3. The Hamburg Centre for Ultrafast Imaging, 22761 Hamburg, Germany
4. Department of Applied Physics, Stanford University, Stanford, California 94305, United States
5. Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
6. SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States