1. Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, 95440 Bayreuth, Germany
2. Bayerisches Geoinstitut, University of Bayreuth, 95440 Bayreuth, Germany
3. Center for Advanced Radiation Sources, University of Chicago, Chicago, Illinois 60637, United States
4. Photon Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607 Hamburg, Germany
5. Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83, Linköping, Sweden