1. Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
2. Graduate Group in Applied Science and Technology, University of California, Berkeley, California 94720, USA
3. Department of Chemistry, University of California, Davis, California 95616, USA
4. Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
5. Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
6. Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA