1. Japan
Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
2. GSI Helmholtzzentrum für Schwerionenforschung
GmbH, D-64291 Darmstadt, Germany
3. Graduate School
of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
4. Nishina
Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
5. Johannes Gutenberg University—Mainz, D-55099 Mainz, Germany