Charge radii, moments, and masses of mercury isotopes across the =126 shell closure

Day Goodacre, T.*; Afanasjev, A. V.*; Barzakh, A. E.*; Nies, L.*; Marsh, B. A.*; Sels, S.*; Perera, U. C.*; Ring, P.*; Wienholz, F.*; Andreyev, A. N.; et al.

Physical Review C, 104(5), p.054322_1 - 054322_18, 2021/11

https://doi.org/10.1103/PhysRevC.104.054322

Combining laser spectroscopy with Penning-trap mass spectroscopy at the Isolde facility at CERN, the charge radii of neutron-rich mercury isotopes Hg were successfully measured. Furthermore, more precise values for the masses of Hg was obtained, as well as the magnetic moment of Hg. These results were used to understand the systematics of Hg isotopes across the =126 shell closure. Comparison with covariant density functional theory calculations revealed that in particular the 1 and 2 neutron orbitals affect the evolution of charge radii.