The neutron-rich lead isotopes, up to Pb-216, have been studied for the first time, exploiting the fragmentation of a primary uranium beam at the FRS-RISING setup at GSI. The observed isomeric states exhibit electromagnetic transition strengths which deviate from state-of-the-art shell-model calculations. It is shown that their complete description demands the introduction of effective three-body interactions and two-body transition operators in the conventional neutron valence space beyond Pb-208.

New isomers in the full seniority scheme of neutron-rich lead isotopes : the role of effective three-body forces / A. Gottardo, J. J. Valiente-Dobon, G. Benzoni, R. Nicolini, A. Gadea, S. Lunardi, P. Boutachkov, A. M. Bruce, M. Gorska, J. Grebosz, S. Pietri, Z. Podolyak, M. Pfuetzner, P. H. Regan, H. Weick, J. Alcantara Nunez, A. Algora, N. Al-Dahan, G. de Angelis, Y. Ayyad, N. Alkhomashi, P. R. P. Allegro, D. Bazzacco, J. Benlliure, M. Bowry, A. Bracco, M. Bunce, F. Camera, E. Casarejos, M. L. Cortes, F. C. L. Crespi, A. Corsi, A. M. D. Bacelar, A. Y. Deo, C. Domingo-Pardo, M. Doncel, Z. Dombradi, T. Engert, K. Eppinger, G. F. Farrelly, F. Farinon, E. Farnea, H. Geissel, J. Gerl, N. Goel, E. Gregor, T. Habermann, R. Hoischen, R. Janik, S. Klupp, I. Kojouharov, N. Kurz, S. M. Lenzi, S. Leoni, S. Mandal, R. Menegazzo, D. Mengoni, B. Million, A. I. Morales, D. R. Napoli, F. Naqvi, C. Nociforo, A. Prochazka, W. Prokopowicz, F. Recchia, R. V. Ribas, M. W. Reed, D. Rudolph, E. Sahin, H. Schaffner, A. Sharma, B. Sitar, D. Siwal, K. Steiger, P. Strmen, T. P. D. Swan, I. Szarka, C. A. Ur, P. M. Walker, O. Wieland, H. Wollersheim, F. Nowacki, E. Maglione, A. P. Zuker. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 109:16(2012), pp. 162502.1-162502.5. [10.1103/PhysRevLett.109.162502]

New isomers in the full seniority scheme of neutron-rich lead isotopes : the role of effective three-body forces

A. Bracco;F. Camera;F.C.L. Crespi;S. Leoni;
2012

Abstract

The neutron-rich lead isotopes, up to Pb-216, have been studied for the first time, exploiting the fragmentation of a primary uranium beam at the FRS-RISING setup at GSI. The observed isomeric states exhibit electromagnetic transition strengths which deviate from state-of-the-art shell-model calculations. It is shown that their complete description demands the introduction of effective three-body interactions and two-body transition operators in the conventional neutron valence space beyond Pb-208.
shell-model ; binding-energies ; fragmentation ; nuclei
Settore FIS/04 - Fisica Nucleare e Subnucleare
2012
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/229896
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