Excitation strengths in 109Sn: Single-neutron and collective excitations near 100Sn

D. D. Dijulio, J. Cederkall, C. Fahlander, A. Ekström, M. Hjorth-Jensen, M. Albers, V. Bildstein, A. Blazhev, I. Darby, T. Davinson, H. De Witte, J. Diriken, Ch Fransen, K. Geibel, R. Gernhäuser, A. Görgen, H. Hess, J. Iwanicki, R. Lutter, P. ReiterM. Scheck, M. Seidlitz, S. Siem, J. Taprogge, G. M. Tveten, J. Van De Walle, D. Voulot, N. Warr, F. Wenander, K. Wimmer

    Research outputpeer-review


    A set of B(E2) values for the low-lying excited states in the radioactive isotope 109Sn 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 58Ni target. The B(E2) values were determined using the known 2+→0+ reduced transition probability in 58Ni 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 technique with low-energy radioactive beams. The results provide constraints for the single-neutron states relative to 100Sn and also indicate the importance of both single-neutron and collective excitations in the light Sn isotopes.

    Original languageEnglish
    Article number031302
    Pages (from-to)031302-1 - 031302-5
    Number of pages5
    JournalPhysical Review C - Nuclear Physics
    Issue number3
    StatePublished - Sep 2012


    FundersFunder number
    STFC - Science and Technology Facilities CouncilST/J00006X/1

      ASJC Scopus subject areas

      • Nuclear and High Energy Physics

      Cite this