Shape coexistence in neutron-rich odd-mass S isotopes

ORAL

Abstract

Collective motions in atomic nuclei at low excitation energies have been characterized by the ground-state shape as a single basis. This picture can be altered in exotic nuclei with unusual proton-to-neutron ratios if the nuclear shape can change drastically at low spin. Recently, there has been an increasing interest for shape-coexistence phenomena in neutron-rich S isotopes and studies suggested fairly large collectivity in ${}^{40,42,44}$S isotopes. We will discuss the search for isomeric or long-lived states in ${}^{45}$S for which no excited states are known in the literature and the pursuit to fully characterize the band structure of the low-lying states in ${}^{43,45}$S, which provide key information to establish a comprehensive picture of the shape coexistence in this region. Direct model-independent measurements of the ${}^{43,45}$S excited states were realized by applying the Recoil Distance Method with the TRIPLEX Plunger in conjunction with GRETINA to fast rare isotope beams at the NSCL.

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Authors

  • Tea Mijatovic

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Nobuyuki Kobayashi

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Hiro Iwasaki

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Charles Loelius

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Kenneth Whitmore

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Robert Elder

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Alexandra Gade

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Daniel Bazin

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Dirk Weisshaar

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Peter Bender

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Joe Belarge

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Eric Lunderberg

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Brandon Elman

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Brenden Longfellow

    • National Superconducting Cyclotron Laboratory, Michigan State University, USA

  • Alfred Dewald

    • University of Cologne, Germany

  • Thoryn Haylett

    • University of York, United Kingdom

  • Michael Mathry

    • TU Darmstadt, Germany

  • Sebastian Heil

    • TU Darmstadt, Germany