Coulomb Excitation of Sn-104 and the Strength of the Sn-100 Shell Closure
Tarih
2013Yazar
Jolie, J.
Weick, H.
Wendt, A.
Wieland, O.
Winfield, J. S.
Wollersheim, H. J.
Farinon, F.
Gerl, J.
Goel, N.
Grebosz, J.
Habermann, T.
Hoischen, R.
Jansson, K.
Jungclaus, A.
Kojouharov, I.
Knoebel, R.
Kumar, R.
Kurcewicz, J.
Kurz, N.
Lalovic, N.
Merchan, E.
Moschner, K.
Naqvi, F.
Singh, B. S. Nara
Nyberg, J.
Nociforo, C.
Guastalla, G.
DiJulio, D. D.
Gorska, M.
Cederkall, J.
Boutachkov, P.
Golubev, P.
Pietri, S.
Grawe, H.
Nowacki, F.
Sieja, K.
Algora, A.
Ameil, F.
Arici, T.
Atac, A.
Bentley, M. A.
Blazhev, A.
Bloor, D.
Brambilla, S.
Braun, N.
Camera, F.
Dombradi, Zs.
Domingo Pardo, C.
Estrade, A.
Obertelli, A.
Pfuetzner, M.
Pietralla, N.
Podolyak, Z.
Prochazka, A.
Ralet, D.
Reiter, P.
Rudolph, D.
Schaffner, H.
Schirru, F.
Scruton, L.
Sohler, D.
Swaleh, T.
Taprogge, J.
Vajta, Zs.
Wadsworth, R.
Warr, N.
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A measurement of the reduced transition probability for the excitation of the ground state to the first 2(+) state in Sn-104 has been performed using relativistic Coulomb excitation at GSI. Sn-104 is the lightest isotope in the Sn chain for which this quantity has been measured. The result is a key point in the discussion of the evolution of nuclear structure in the proximity of the doubly magic nucleus Sn-100. The value B(E2; 0(+) -> 2(+)) = 0.10(4) e(2)b(2) is significantly lower than earlier results for Sn-106 and heavier isotopes. The result is well reproduced by shell model predictions and therefore indicates a robust N = Z = 50 shell closure. DOI: 10.1103/PhysRevLett.110.172501
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