Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session F13: Nuclear Theory II
9:00 AM–11:15 AM,
Thursday, November 30, 2023
Hilton Waikoloa Village
Room: Kona 2-3
Chair: Gregory Potel, Lawrence Livermore Natl Lab
Abstract: F13.00008 : Differential charge radii: Proton-neutron interaction effects*
10:45 AM–11:00 AM
Presenter:
Udeshika C Perera
(Mississippi State University)
Authors:
Anatoli Afanasjev
(Mississippi State University)
Udeshika C Perera
(Mississippi State University)
radii were carried out in covariant density functional theoretical calculations without pairing interaction on the
example of selected configurations in the Pb isotopes [1]. The proton-neutron interaction of neutron(s) added to the
neutron N = 126 core and the protons forming the Z = 82 proton core is responsible for a major contribution to
the buildup of differential charge radii. It depends on the products of proton and neutron wave functions and thus
on their nodal structure. This interaction leads to a redistribution of single-particle density of occupied proton
states which in turn modifies the charge radii. The microscopic origin of this redistribution and its consequences
for differential charge radii were investigated for the first time. Self-consistency effects affecting the shape of
proton potential, total proton densities and the energies of the single-particle proton states provide only minor
contribution to differential charge radii. This work is a continuation of our efforts to understand the charge radii in
the framework of covariant density functional theory [2].
*This material is based upon work supported by the U.S. Department of Energy, Office of Science,Office of Nuclear Physics under Award No. DE-SC0013037.
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