1. Material Physics and Technology at Extreme Conditions Laboratory of Crystallography University of Bayreuth 95440 Bayreuth Germany
2. Centre for Science at Extreme Conditions and School of Physics and Astronomy University of Edinburgh EH9 3FD Edinburgh UK
3. Department of Physics Chemistry and Biology (IFM) Linköping University 58183 Linköping Sweden
4. Bayerisches Geoinstitut University of Bayreuth 95440 Bayreuth Germany
5. State Key Laboratory of Crystal Materials Shandong University Jinan 250100 P. R. China
6. Deutsches Elektronen-Synchrotron Notkestr. 85 22607 Hamburg Germany
7. Center for Advanced Radiation Sources University of Chicago Chicago IL 60637 USA
8. European Synchrotron Radiation Facility B.P. 220 38043 Grenoble Cedex France
9. Department of Chemistry University of Munich (LMU) Butenandtstrasse 5–13 81377 Munich Germany