1. Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, 95440 Bayreuth, Germany
2. Bavarian Research Institute of Experimental Geochemistry and Geophysics (BGI), University of Bayreuth, Univesitaetsstrasse 30, 95440 Bayreuth, Germany
3. Photon Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607 Hamburg, Germany
4. European Synchrotron Radiation Facility, BP 220, 38043 Cedex Grenoble, France
5. Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden