1. High Pressure Collaborative Access Team, X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
2. Geodynamics Research Center, Ehime University, Ehime 790-8577, Japan
3. Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, United States
4. Physics Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States