Nuclear charge radii of neutron-deficient scandium isotopes

ORAL

Abstract

Charge radii of neutron deficient 40,41Sc (Z=21) isotopes have been determined at the BEam COoler and LAser spectroscopy facility at FRIB to investigate the N=20 shell closure. Particularly, the typical kink structure in the charge radius evolution at N=20 is very weak in Ar, K and Ca while it is strongly pronounced at N=28. With one additional proton in the 1f7/2 shell in Sc, additional cross-shell interactions occur and affect the behavior at the shell closure. The results will be presented, which promote a global understanding of the structure around 40Ca, and the weak shell-closure signature at N=20.

*This work is supported by NSF grant PHY-15-65546.

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Presenters

  • Kristian L Koenig

    • Michigan State University

Authors

  • Kristian L Koenig

    • Michigan State University

  • Robert Powel

    • Michigan State University

  • Kei Minamisono

    • Michigan State University

  • Andrew Klose

    • Augustana University

  • Stephan Fritzsche

    • Helmholtz-Institute Jena

  • Helena García Escudero

    • Helmholtz-Institute Jena

  • Jeremy D Lantis

    • Michigan State University

  • Yuan Liu

    • Oak Ridge National Laboratory
    • Michigan State University

  • Witold Nazarewicz

    • Michigan State University

  • Wilfried Nörtershäuser

    • Institut für Kernphysik, Technische Universität Darmstadt
    • Technische Universität Darmstadt
    • TU Darmstadt

  • Skyy V Pineda

    • Michigan State University

  • Paul-Gerhard Reinhard

    • FAU Erlangen-Nürnberg

  • Dominic M Rossi

    • Technische Universität Darmstadt
    • TU Darmstadt