1. Department of Physics, Goethe-Universität, 60323 Frankfurt am Main, Germany
2. GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
3. Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
4. Atomic, Molecular and Optical Physics Laboratory, RIKEN, Saitama 351-0198, Japan
5. RIKEN Nishina Center, Saitama 351-0198, Japan
6. National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
7. Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia