Neutron-rich nuclei beyond N = 126 in the lead region were populated by fragmenting a 238U beam at 1 GeV A on a Be target and then separated by the Fragment Separator (FRS) at GSI. Their isomeric decays were observed, enabling study of the shell structure of neutron-rich nuclei around the Z=82 shell closure. Some preliminary results are reported in this paper.
Isomers in neutron-rich lead isotopes populated via the fragmentation of (238)U at 1 GeV A / A. Gottardo, J.J. Valiente-Dobón, G. Benzoni, R. Nicolini, J..A. Núñez, A. Algora, N. Al-Dahan, G..D. Angelis, Y. Ayyad, N. Alkhomashi, P.R.P. Allegro, J. Benlliure, P. Boutachkov, M. Bowry, A. Bracco, A.M. Bruce, M. Bunce, E. Casarejos, L. Cortes, F.C.L. Crespi, F. Camera, A. Corsi, A..M..D. Bacelar, A. Deo, C. Domingo-Pardo, M. Doncel, Z. Dombradi, T. Engert, K. Eppinger, G.F. Farrelly, F. Farinon, A. Gadea, H. Geissel, J. Gerl, N. Goel, M. Górska, J. Grebosz, E. Gregor, T. Haberman, R. Hoischen, R. Janik, S. Klupp, I. Kojouharov, N. Kurz, S. Leoni, S. Lunardi, S. Mandal, R. Menegazzo, D. Mengoni, B. Million, D.R. Napoli, F. Naqvi, C. Nociforo, M. Pfützner, S. Pietri, Z. Podolyak, A. Prochazka, W. Prokopowicz, F. Recchia, R.V. Ribas, M.W. Reed, P.H. Regan, D. Rudolph, E. Sahin, H. Schaffner, A. Sharma, B. Sitar, D. Siwal, K. Steger, P. Strmen, T.P.D. Swan, I. Szarka, P.M. Walker, O. Wieland, H. Weick, H.-J. Wollersheim. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 312(2011), pp. 092026.1-092026.5. ((Intervento presentato al convegno International Nuclear Physics Conference (INPC) tenutosi a Vancouver nel 2010.
Isomers in neutron-rich lead isotopes populated via the fragmentation of (238)U at 1 GeV A
R. Nicolini;A. Bracco;F.C.L. Crespi;F. Camera;A. Corsi;S. Leoni;
2011
Abstract
Neutron-rich nuclei beyond N = 126 in the lead region were populated by fragmenting a 238U beam at 1 GeV A on a Be target and then separated by the Fragment Separator (FRS) at GSI. Their isomeric decays were observed, enabling study of the shell structure of neutron-rich nuclei around the Z=82 shell closure. Some preliminary results are reported in this paper.
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