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Intermediate-energy Coulomb excitation of Sn 104: Moderate E2 strength decrease approaching Sn 100

AutorDoornenbal, P.; Takeuchi, S.; Aoi, N.; Matsushita, M.; Jungclaus, Andrea ; Shiga, Y.; Sohler, D.; Taniuchi, R.
Fecha de publicación2014
EditorAmerican Physical Society
CitaciónPhysical Review C - Nuclear Physics 90: 061302(R) (2014)
Resumen© 2014 American Physical Society. The reduced transition probability B(E2)↑ of the first excited 2+ state in the nucleus Sn104 was measured via Coulomb excitation in inverse kinematics at intermediate energies. A value of 0.173(28) e2b2 was extracted from the absolute cross section on a Pb target. Feeding contributions in Sn104 from higher lying states were estimated by a reference measurement of the stable Sn112. Corresponding only to a moderate decrease of excitation strength relative to the almost constant values observed in the proton-rich, even-A Sn106-114 isotopes, present state-of-the-art shell-model predictions, which include proton and neutron excitations across the N=Z=50 shell closures as well as standard polarization charges, underestimate the experimental findings.
DescripciónP. Doornenbal, et al. ; 6 pags. ; 4 figs. ; 1 tab. ; PACS number(s): 21.60.Cs, 23.20.Js, 25.70.De, 27.60.+j
Identificadoresdoi: 10.1103/PhysRevC.90.061302
issn: 1089-490X
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