[1] Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA
[2] SLAC Natl Accelerator Lab, Accelerator Res Div, Menlo Pk, CA 94025 USA
[3] SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA 94025 USA
[4] Univ Electrocommun, Inst Laser Sci, Chofu, Tokyo 1828585, Japan
[5] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA
[6] Univ Chicago, Dept Phys, Chicago, IL 60637 USA
[7] SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA
[8] RIKEN SPring 8 Ctr, Sayo Cho, Sayo, Hyogo 6795148, Japan
[9] Japan Synchrotron Radiat Res Inst, Sayo Cho, Sayo, Hyogo 6795198, Japan
[10] Deutsch Elektronen Synchrotron DESY, Ctr Free Elect Laser Sci CFEL, D-22607 Hamburg, Germany
[11] Univ Hamburg, Det Phys, D-20355 Hamburg, Germany
[12] Univ Wisconsin Madison, Dept Phys, Madison, WI 53706 USA