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

Thomas Day Goodacre, A.V. Afanasjev, Anatoly (A.E.) Barzakh, L. Nies, Bruce A Marsh, Simon Sels, U. Perera, P. Ring, Frank Wienholtz, Andrei N. Andreyev, Piet Van Duppen, Numa A. Althubiti, Boris Andel, Dimitar Atanasov, Ricardo Manuel Dos Santos Augusto, Jonathan Billowes, Klaus Blaum, Thomas Elias Cocolios, Cubiss James G., Gregory James Farooq-SmithDmitry V. Fedorov, Valentin N. Fedosseev, Kieran T. Flanagan, Liam Paul Gaffney, Lars Ghys, Alexander Gottberg, Mark Huyse, S. Kreim, João Pedro Fernandes Pinto Ramos

Research outputpeer-review


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 207Hg, and more precise mass values of 206–208Hg. 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.
Original languageEnglish
Article number054322
Pages (from-to)1-18
Number of pages18
JournalPhysical Review C
StatePublished - 30 Nov 2021

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