1. Institute of Modern PhysicsChinese Academy of Sciences Lanzhou China
2. School of Physics and Optoelectronic EngineeringXidian University Xi'an China
3. GSI Helmholtzzentrum fuer Schwerionenforschung GmbH Darmstadt Germany
4. Helmholtz‐Zentrum Dresden‐Rossendorf Dresden Germany
5. ExtreMe Matter Institute EMMIGSI Helmholtzzentrum fuer Schwerionenforschung GmbH Darmstadt Germany