1. X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
2. Mineral Physics Institute, Stony Brook University, Stony Brook, New York, New York 11794-2100, USA
3. Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37922, USA
4. Department of Geosciences, Stony Brook University, Stony Brook, New York, New York 11794-2100, USA
5. Photon Sciences Division, Brookhaven National Laboratory, Upton, New York 11973, USA