Speaker
Description
The single particle (sp) structure of isomeric states of some well-deformed even-even
nuclei in the rare-earth and actinide regions is studied within a self-consistent Hartree-
Fock plus BCS approach (with blocking)[1]. The well studied Skyrme SIII parametrisation
is used for the particle-hole part of the nuclear interaction and a seniority force for its
residual part. The parameters of the latter have been carefully adjusted to reproduce the
moments of inertia of the first 2+ states separately in each region. The criterion to assess
the relevance of our results is the fair reproduction of the isomeric energy as obtained
from two independent self-consistent calculations [1,2]. The calculations will be limited to
merely seniority-two states for each charge states (possibly combining them). A particu-
lar effort will be devoted to study the well-documented isomeric states around the 178Hf
nucleus. The polarisation effects due to the sp excitations from what is obtained in the
ground states for time-even moments of the density will be discussed.
[1] P. Quentin, L. Bonneau, N. Minkov, D. Ivanova, J. Bartel, H. Molique, K. Meng-Hock,
“Single-particle spectra, pairing correlations and spectroscopic properties of actinide and heavier
nuclei ”, Bulg. Journ. Phys. 48 (2021) 634-644.
[2] N. Minkov, L. Bonneau, P. Quentin, J. Bartel, H. Molique, D. Ivanova,
“Energies of K-isomeric states in well-deformed heavy even-even nuclei ”,
submitted for publication in Phys. Rev. C.
