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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. Reiter
  • M. 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

    Abstract

    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
    Volume86
    Issue number3
    DOIs
    StatePublished - Sep 2012

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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