Charge radii, moments, and masses of mercury isotopes across the <i>N</i>=126 shell closure

Goodacre, T Day, Afanasjev, AV, Barzakh, AE, Nies, L, Marsh, BA, Sels, S, Perera, UC, Ring, P, Wienholtz, F, Andreyev, AN
et al (show 41 more authors) (2021) Charge radii, moments, and masses of mercury isotopes across the <i>N</i>=126 shell closure. PHYSICAL REVIEW C, 104 (5).

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Combining laser spectroscopy in a Versatile Arc Discharge and Laser Ion Source (VADLIS) with Penning-trap mass spectrometry at the CERN-ISOLDE facility, this work reports on mean-square charge radii of neutron-rich mercury isotopes across the N=126 shell closure, the electromagnetic moments of Hg207, and more precise mass values of Hg206-208. The odd-even staggering (OES) of the mean square charge radii and the kink at N=126 are analyzed within the framework of covariant density functional theory (CDFT), with comparisons between different functionals to investigate the dependence of the results on the underlying single-particle structure. The observed features are defined predominantly in the particle-hole channel in CDFT, since both are present in the calculations without pairing. However, the magnitude of the kink is still affected by the occupation of the ν1i11/2 and ν2g9/2 orbitals with a dependence on the relative energies as well as pairing.

Item Type: Article
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 16 Nov 2021 08:44
Last Modified: 18 Oct 2023 09:45
DOI: 10.1103/PhysRevC.104.054322
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