The 56Ni nucleus is doubly magic with the neutron number N = 28, which occurs due to a shell gap driven by the spin-orbit force, but is considered to be a soft core. The mean-square charge radii <r2> were determined for 54,55,56Ni using collinear laser spectroscopy technique at BECOLA at NSCL/MSU to investigate how the softness manifests itself in <r2> at and below N = 28. Details of the experiment and results will be discussed.
*This work is supported in part by NSF grant PHY-15-65546 and DFG grant SFB1245.
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Presenters
Kei Minamisono
Michigan State University
Authors
Felix Sommer
Technische Universität Darmstadt
Kristian L Koenig
Michigan State University
Dominic M Rossi
Technische Universität Darmstadt
TU Darmstadt
Nathan Everett
Michigan State University
David Garand
Michigan State University
Ruben deGroot
University of Jyväskylä
Phillip Imgram
Technische Universität Darmstadt
Colton Kalman
Michigan State University
Andrew Klose
Augustana University
Jeremy D Lantis
Michigan State University
Yuan Liu
Oak Ridge National Laboratory
Michigan State University
Andrew J Miller
Michigan State University
Kei Minamisono
Michigan State University
Wilfried Nörtershäuser
Institut für Kernphysik, Technische Universität Darmstadt
Technische Universität Darmstadt
TU Darmstadt
Skyy V Pineda
Michigan State University
Robert Powel
Michigan State University
Laura Renth
Technische Universität Darmstadt
Elisa Romeo-Romero
Oak Ridge National Laboratory
Chandana S Sumithrarachchi
Michigan State University
National Superconducting Cyclotron Laboratory, MSU
