Shapes and Symmetries in Nuclei: from Experiment to Theory (SSNET'22 Conference)

Session

Session 10: Shapes and shape coexistence

1 févr. 2023, 11:20

Présidents de session

Session 10: Shapes and shape coexistence

• Elena Litvinova (Western Michigan University, USA)

114. Two-quasiparticle states in some odd-odd heavy deformed nuclei within a microscopic approach

Bonneau Ludovic (University of Bordeaux, France)

01/02/2023 11:20

We study low-lying states of two-quasiparticle character in some well-deformed odd-odd nuclei around $^{178}$Hf within the framework of the Skyrme energy-density functional (SEDF) approach, including BCS pairing correlations with selfconsistent blocking. We use the SIII SEDF parametrization with time-odd terms and seniority pairing residual interaction as in a previous study of...

115. Quantum Simulation of the Agassi Model Trapped Ions

Garcia-Ramos Jose-Enrique (University of Huelva, Spain)

01/02/2023 11:45

116. Generalised seniority for isomers and low- lying excitations in nuclei

Bhoomika Maheshwari

01/02/2023 12:10

Isomers are the long-lived excited states of nuclei and are of particular interest due to their capacities to provide insights into the nuclear structure [1]. The reason behind their occurrence depends mostly upon the structural surroundings and can vary from region to region. Symmetries of pairing Hamiltonian for the shell model in terms of seniority and generalized seniority are known to...

117. Study of nuclear low-lying spectrum and shape phase transition within microscopic triaxial-and-pairing collective Hamiltonian (remote)

Zhipan Li (Southwest University, Chongqing, China)

01/02/2023 12:30

The triaxial deformation and coupling with pairing vibration play important roles on the nuclear low-lying spectra and shape transitions. Here we have constructed a triaxial-and-pairing collective Hamiltonian that describes the triaxial shape vibrations, rotations, and coupling with pairing vibration, based on the covariant density functional theory (CDFT). The dynamics of the collective...

118. Effects of the shape on the formation and decay properties of the 229mTh isomer (remote)

Prof. Nikolay Minkov (Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences)

01/02/2023 12:55

It will be shown within a relatively simple nuclear structure model framework [1] that the formation of the 8 eV "clock" isomer $^{229m}$Th may be the effect of single-neutron levels quasi-degeneracy stemming from a specific quadrupole octupole shape of the nucleus. The very fine interaction between collective and single-particle modes within narrow limits in the deformation space rather...