The platinum nuclei: concealed configuration mixing and shape coexistence

Abstract

The role of configuration mixing in the Pt region is investigated. For this chain of isotopes, the nature of the ground state changes smoothly, being spherical around mass $A\sim 174$ and $A\sim 192$ and deformed around the mid-shell N=104 region. This has a dramatic effect on the systematics of the energy spectra as compared to the systematics in the Pb and Hg nuclei. Interacting Boson Model with configuration mixing calculations are presented for gyromagnetic factors, $\alpha$-decay hindrance factors, and isotope shifts. The necessity of incorporating intruder configurations to obtain an accurate description of the latter properties becomes evident.

Accepted in Physical Review C

References in corpus (6)

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• Disentangling the nuclear shape coexistence in even-even Hg isotopes using the interacting boson model
• The IBM Description of the B(E2) Anomaly: Dynamical Triaxiality and Configuration Mixing
• Shape evolution in even-mass ${}^{98-104}$Zr isotopes via lifetime measurements using the $\gamma \gamma$-coincidence technique
• Partial dynamical symmetry and the vibrational structure of Cd isotopes
• Two-neutron transfer reactions as a tool to study the interplay between shape coexistence and quantum phase transitions
• The influence of intruder states in even-even Po isotopes