Collective bands in doubly-even Sn nuclei: Energy spectra and electromagnetic decay properties

Abstract

Starting from a simplified description, treating proton two-particle two-hole (2p-2h) excitations coupled with spherical quadrupole vibrations in interaction with the low-lying quadrupole vibrational states in doubly-even $^{112\ensuremath{-}118}\mathrm{Sn}$ nuclei, we are able to account for the regular $\ensuremath{\Delta}J=2$ band structure on top of excited ${J}^{\ensuremath{\pi}}={0}^{+}$ states. Energy spectra as well as $E2$ and $E0$ decay properties are calculated and are extensively compared with recent experimental data.NUCLEAR STRUCTURE Proton 2p-2h-core coupling calculations, collective bands in $^{112\ensuremath{-}118}\mathrm{Sn}$; energy spectra, $E2$ and $E0$ transitions.