Pasqualato, G.; Gottardo, A.; Mengoni, D.; Goasduff, A.; Valiente-Dobón, J.J.; Nowacki, F.; Péru, S.; Pillet, N.; de Angelis, G.; Bakes, S.D.; Bayram, T.; Bazzacco, D.; Benzoni, G.; Brugnara, D.; Cicerchia, M.; Čolovic, Petra; Cortés, M.L.; Gadea, A.; Galtarossa, F.; Górska, M.; Gozzelino, A.; Gregor, E.; Hubbard, N.; Illana, A.; Jurado, M.; Lenzi, S.M.; Mantovani, G.; Marchi, T.; Menegazzo, R.; Montaner-Pizá, A.; Napoli, D.R.; Recchia, F.; Siciliano, M.; Testov, D.; Szilner, Suzana; Zanon, I. (2023) An alternative viewpoint on the nuclear structure towards 100Sn: Lifetime measurements in 105Sn. Physics Letters B, 845 . ISSN 03702693
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Abstract
This work aims at presenting an alternative approach to the long standing problem of the B(E2) values in Sn isotopes in the vicinity of the N=Z double-magic nucleus Sn-100, until now predominantly measured with relativistic and intermediate-energy Coulomb excitation reactions. The direct measurement of the lifetime of low-lying excited states in odd-even Sn isotopes provides a new and precise guidance for the theoretical description of the nuclear structure in this region. Lifetime measurements have been performed in Sn-105 for the first time with the coincidence Recoil Distance Doppler Shift technique. The lifetime results for the 7/2(1)(+) first excited state and the 11/2(1)(+) state, 2(+)(Sn-104) circle times nu 1g(7/2) multiplet member, are discussed in comparison with state-of-the-art shell model and mean field calculations, highlighting the crucial contribution of proton excitation across the core of Sn-100. The reduced transition probability B(E2) of the 11/2(1)(+) core-coupled state points out an enhanced staggering with respect to the B(E2; 2(1)(+) -> 0(1)(+)) in the even-mass Sn-104 and Sn-106 isotopes.
| Item Type: | Article | ||||||||
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| Uncontrolled Keywords: | fizika; nuklearna fizika; nuklearna struktura | ||||||||
| Subjects: | NATURAL SCIENCES NATURAL SCIENCES > Physics NATURAL SCIENCES > Physics > Nuclear Physics |
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| Divisions: | Division of Experimental Physics | ||||||||
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| Depositing User: | Virna Brumnić | ||||||||
| Date Deposited: | 28 Apr 2025 11:26 | ||||||||
| URI: | http://fulir.irb.hr/id/eprint/9763 | ||||||||
| DOI: | 10.1016/j.physletb.2023.138148 |
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