1. Stanford
Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, California 94025, United States
2. Department
of Geological Sciences, School of Earth, Energy, and Environmental
Sciences, Stanford University, Stanford, California 94305-2115, United States
3. Department
of Photon Science, SLAC National Accelerator Laboratory, Stanford University, 2575 Sand Hill Road, Menlo Park, California 94025, United States