Measurements of binding energies and electromagnetic moments of silver isotopes - A complementary benchmark of density functional theory
PHYSICS LETTERS B(2024)
摘要
We report on a set of high-precision measurements of nuclear binding and excitation energies, as well as nuclear spins, magnetic dipole and electric quadrupole moments of neutron-rich silver isotopes, Ag113-123. The measurements were performed using the JYFLTRAP mass spectrometer and the collinear laser spectroscopy beamline at the Ion Guide Isotope Separator On-Line (IGISOL) facility. For the first time, we can firmly establish the ordering of the long-lived I-pi = 1/2-, 7/2(+) states in these isotopes, and pin down the inversion of these two levels at either A = 121 (N = 74) or A = 123 (N. = 76). We compare these findings to calculations performed with density functional theory (DFT), from which we establish the crucial role that the spin-orbit strength and time-odd mean fields play in the simultaneous description of electromagnetic moments and nuclear binding.
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