1. Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf HZDR, 01328 Dresden, Germany
2. Photon Science Department, Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
3. Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
4. Helmholtz Institute Jena, 07743 Jena, Germany
5. Helmholtz Centre for Heavy Ion Research GSI, 64291 Darmstadt, Germany