Neutron-Unbound States in the N=20 Island of Inversion

ORAL

Abstract

Studies of neutron-rich nuclei around N=20 investigate a region of the nuclear chart with anomalous structural properties known as the “Island of Inversion”. It is characterized by a level inversion not predicted in the spherical shell model and associated with enhanced binding energy, deformation, and novel structure. Nuclei in this region are short-lived and require radioactive beams in order to study them and their neutron-unbound states. An experiment was performed at the National Superconducting Cyclotron Lab (NSCL) to study unique nuclear structure characteristics of nuclei with A/Z ~3 using the MoNA-LISA neutron arrays and the Sweeper magnet to perform invariant mass spectroscopy. Current status of data analysis will be discussed.

*This material is based upon work supported by the Department of Energy National Nuclear Security Administration through the Nuclear Science and Security Consortium under Award Number DE-NA0003180.

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Authors

  • Dayah Chrisman

    • Michigan State University

  • Thomas Baumann

    • Michigan State University
    • National Superconducting Cyclotron Laboratory
    • NSCL

  • Paul Gueye

    • Michigan State University
    • National Superconducting Cyclotron Laboratory

  • Anthony Kuchera

    • Davidson College

  • Robbie Seaton-Todd

    • Davidson College

  • Nathan Frank

    • Augustana College

  • John McDonaugh

    • Augustana College