1. Institute of Physics, University of M. Curie-Sklodowska, ul. Radziszewskiego 10, 20-031 Lublin, Poland
2. Centre d'Etudes Nucléaires de Bordeaux-Gradignan, Chemin du Solarium, BP120, F-33175 Gradignan, France
3. Department of Nuclear Physics, Vietnam National University Hanoï, 334 Nguyen Traï, Hanoï, Vietnam