학술논문
Charge radii, moments and masses of mercury isotopes across the N = 126 shell closure
Document Type
Working Paper
Author
Goodacre, T. Day; Afanasjev, A. V.; Barzakh, A. E.; Nies, L.; Marsh, B. A.; Sels, S.; Perera, U. C.; Ring, P.; Wienholtz, F.; Andreyev, A. N.; Van Duppen, P.; Althubiti, N. A.; Andel, B.; Atanasov, D.; Augusto, R. S.; Billowes, J.; Blaum, K.; Cocolios, T. E.; Cubiss, J. G.; Farooq-Smith, G. J.; Fedorov, D. V.; Fedosseev, V. N.; Flanagan, K. T.; Gaffney, L. P.; Ghys, L.; Gottberg, A.; Huyse, M.; Kreim, S.; Kunz, P.; Lunney, D.; Lynch, K. M.; Manea, V.; Palenzuela, Y. Martinez; Medonca, T. M.; Molkanov, P. L.; Mougeot, M.; Ramos, J. P.; Rosenbusch, M.; Rossel, R. E.; Rothe, S.; Schweikhard, L.; Seliverstov, M. D.; Spagnoletti, P.; Van Beveren, C.; Veinhard, M.; Verstraelen, E.; Welker, A.; Wendt, K.; Wolf, R. N.; Zadvornaya, A.; Zuber, K.
Source
Physical Review C 104, 054322 (2021)
Subject
Language
Abstract
Combining laser spectroscopy in a Versatile Arc Discharge and Laser Ion Source, 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 $^{207}$Hg and more precise mass values of $^{206-208}$Hg. 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 $1i_{11/2}$ and $2g_{9/2}$ orbitals with a dependence on the relative energies as well as pairing.
Comment: 20 pages, 12 figures, Phys. Rev. C in press
Comment: 20 pages, 12 figures, Phys. Rev. C in press