Configuration Mixing in Pt Nuclei within Interacting Boson Model-2

Abstract

This article provides to descript a consistent of the even-even 182-200 Pt isotopes. This has been achieved using the interacting boson model-2 (IBM-2) and including configuration mixing (IBM-2 CM). Our attention is paid to describe the nuclei shape and to their connecting with shaping coexistence phenomenon. Ten isotopes are studied, ranging from the middle of the neutron shell to very near the doubly closed shell at 208 Pb. The same Hamiltonian is used for all the nuclei studied, with parameters which are constant or smoothly varying. In this study, we showed the transition between more axially symmetric deformed features of light Pt isotopes to γ-unstable and vibrational isotopes (near spherical shape) for 198-200 Pt isotopes.

Configuration Mixing for Po Isotopes within the Interacting Boson Model-2

“…The experimental behavior of 0+ states is consistent with this IBM-2 CM picture. The energy of the 0 + 2 states (intruder states) increases, in fact, with the number of neutrons and goes up in two configurations, although few experimental information about intruder 0 + 2 states is available [22,23].…”