10TH International workshop on quantum phase transitions in nuclei and many-body systems

Microscopic description of octupole deformations and collective excitations in even - even Xe and Ba isotopes

11 Jul 2022, 18:35

20m

IUC

Density functional and beyond-mean-field approaches to QPTs in nuclei Density functional and beyond-mean-field approaches to QPTs in nuclei

Speaker

Luka Lotina (University of Zagreb)

Description

In this talk, some of the recent results of the microscopic description of octupole collective excitations in the nuclei near N=56 and N=88 are presented. By performing the axially symmetric self-consistent mean field (SCMF) calculations with the DD-PC1 energy density functional, octupole deformations of the ground state shapes of even-even Ba and Xe isotopes are analysed. The excitation energies and transition strengths are calculated by using the quadrupole-octupole collective Hamiltonian (QOCH) model. The calculated excitation energy spectrum is mostly in good agreement with experimental data. Octupole-deformed ground states are found in Ba and Xe isotopes with neutron numbers around N=56 and N=88.
Ref. K. Nomura, L. Lotina, T. Niksic, and D. Vretenar, Phys. Rev. C 103, 054301 (2021)

Presentation materials

lotina_luka_dubrovnik.pdf