1. School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK
2. EaStCHEM, School of Chemistry and Centre for Science at Extreme Conditions, University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, UK
3. Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
4. Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
5. Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
6. Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794, USA
7. SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA