Effective Charges in the fp Shell

Rickard du Rietz, Jörgen Ekman, Dirk Rudolph, Claes Fahlander, A Dewald, O Moller, B Saha, M Axiotis, MA Bentley, C Chandler, G de Angelis, F Della Vedova, A Gadea, G Hammond, SM Lenzi, N Marginean, DR Napoli, M Nespolo, C Rusu, D Tonev

    Research output: Contribution to journalLetterpeer-review

    Abstract

    Following the heavy-ion fusion-evaporation reaction S-32+Mg-24 at 95 MeV beam energy the lifetimes of analogue states in the T-z=+/-1/2 A=51 mirror nuclei Fe-51 and Mn-51 have been measured using the Cologne plunger device coupled to the GASP gamma-ray spectrometer. The deduced B(E2;27/2(-)-->23/2(-)) values afford a unique opportunity to probe isoscalar and isovector polarization charges and to derive effective proton and neutron charges, epsilon(p) and epsilon(n), in the fp shell. A comparison between the experimental results and several different large-scale shell-model calculations yields epsilon(p)similar to1.15e and epsilon(n)similar to0.80e.
    Original languageEnglish
    Article number222501
    JournalPhysical Review Letters
    Volume93
    Issue number22
    DOIs
    Publication statusPublished - 2004

    Subject classification (UKÄ)

    • Subatomic Physics

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