Role of triaxiality in the ground state shape of neutron rich Yb, Hf, W, Os, and Pt isotopes

TL;DR

This paper investigates how triaxiality influences the ground-state shapes of neutron-rich Yb, Hf, W, Os, and Pt isotopes using self-consistent mean-field models, revealing shape transition signatures across a broad neutron number range.

Contribution

It provides a comparative analysis of ground-state shapes using two different effective interactions, assessing the robustness of shape transition predictions in neutron-rich isotopes.

Findings

Identification of shape transition signatures in the studied isotopes.

Assessment of the independence of results from the choice of effective interaction.

Mapping of oblate-prolate shape evolution across neutron numbers N=110 to N=122.

Abstract

The evolution of the ground-state shape along the triaxial landscape of several isotopes of Yb, Hf, W, Os, and Pt is analyzed using the self-consistent Hartree-Fock-Bogoliubov approximation. Two well reputed interactions (Gogny D1S and Skyrme SLy4) have been used in the study in order to asses to which extent the results are independent of the details of the effective interaction. A large number of even-even nuclei, with neutron numbers from N=110 up to N=122 has been considered, covering in this way a vast extension of the nuclear landscape where signatures of oblate-prolate shape transitions have already manifested both theoretically and experimentally.