1. DSM/DAPNIA CEA SACLAY, 91191 Gif-sur-Yvette, France
2. Department of Physics, The University of Ioannina, 45110 Ioannina, Greece
3. Institut de Physique Nucléaire, IN2P3-CNRS, F-91406, Orsay, France
4. University of Napoli, I-80125, Napoli, I-80125, Napoli, Italy
5. INFN Sezione di Napoli, I-80125, Napoli, Italy
6. GANIL, BP5027, F-14021, Caen, France