Evolution of shell gaps in the neutron-poor calcium region via invariant-mass spectroscopy beyond the proton dripline
ORAL
Abstract
At the National Superconducting Cyclotron Laboratory, a secondary beam of 37Ca was impinged on a 9Be target resulting in a set of reactions populating nuclei beyond the proton dripline of the neutron-poor calcium region. Invariant-mass spectroscopy of prompt proton decay was used to determine the ground-state masses and low-lying structure of 34K, 37Sc, and 38Sc. These masses provide new insights into the isotopic and isotonic trends in the Wigner-removed separation energies, which help elucidate evolving shell structure, showing a fading of the Z=20 shell gap for N≤18 and indications of a N=16 subshell gap.
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Publication:Phys. Rev. C 110, L031302
Presenters
Nicolas Dronchi
Facility for Rare Isotope Beams, Michigan State University
Authors
Nicolas Dronchi
Facility for Rare Isotope Beams, Michigan State University
Robert John Charity
Washington University, St. Louis
Lee G Sobotka
Washington University, St. Louis
Alex Brown
Facility for Rare Isotope Beams, Michigan State University
FRIB
Dirk W Weisshaar
Michigan State University
Alexandra Gade
Michigan State University/FRIB
Kyle W Brown
Michigan State University/Facility for Rare Isotope Beams
Walter Reviol
Argonne National Laboratory
Daniel Bazin
Michigan State University
Peter Farris
Univ of Virginia
Ava M Hill
Michigan State University/FRIB
Jing Li
National Superconducting Cyclotron Laboratory (NSCL)
Brenden Longfellow
Lawrence Livermore National Laboratory
Daniel M Rhodes
Lawrence Livermore National Laboratory
Som Nath Paneru
Los Alamos National Laboratory (LANL)
Stephen Gillespie
FRIB
Adam K Anthony
Michigan State University
High Point University
R Rubino
Facility for Rare Isotope Beams
Facility for Rare Isotope Beams, Michigan State University
National Superconducting Cyclotron Laboratory, Michigan State University
