1. Department of Mathematics, Howard University, Washington, DC 20059, United States
2. The Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC 20015, United States
3. U.S. Army Research Laboratory, RDRL-WML-B, Aberdeen Proving Ground, Maryland 21005, United States
4. HPCAT, X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
5. Photon Science, Deutsches Elektronen-Synchrotron, Hamburg 22607, Germany
6. Center for Advanced Radiation Sources, University of Chicago, Lemont, Illinois 60437, United States