Excitation strengths in Sn-109: Single-neutron and collective excitations near Sn-100
- DiJulio, D. D.
- Cederkall, J.
- Fahlander, C.
- Ekstrom, A.
- Hjorth-Jensen, M.
- Albers, M.
- Bildstein, V.
- Blazhev, A.
- Darby, I.
- Davinson, T.
- De Witte, H.
- Diriken, J.
- Fransen, Ch.
- Geibel, K.
- Gernhaeuser, R.
- Gorgen, A.
- Hess, H.
- Iwanicki, J.
- Lutter, R.
- Reiter, P.
- Scheck, M.
- Seidlitz, M.
- Siem, S.
- Taprogge, J.
- Tveten, G. M.
- Van de Walle, J.
- Voulot, D.
- Warr, N.
- Wenander, F.
- Wimmer, K.
DOIAbstract
A set of B(E2) values for the low-lying excited states in the radioactive isotope Sn-109 were deduced from a Coulomb excitation experiment. The 2.87-MeV/u radioactive beam was produced at the REX-ISOLDE facility at CERN and was incident on a secondary Ni-58 target. The B(E2) values were determined using the known 2(+) -> 0(+) reduced transition probability in Ni-58 as normalization with the semiclassical Coulomb excitation code GOSIA2. The transition probabilities are compared to shell-model calculations based on a realistic nucleon-nucleon interaction and the predictions of a simple core-excitation model. This measurement represents the first determination of multiple B(E2) values in a light Sn nucleus using the Coulomb excitation techniqu...
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