Coriolis contribution to excited states of odd-mass nuclei with different deformation-dependent mass coeffcients

TL;DR

This paper explores how deformation-dependent mass coefficients and Coriolis interactions influence the excited states of odd-mass nuclei within an extended Bohr Hamiltonian framework, providing improved theoretical predictions aligned with experimental data.

Contribution

It introduces a novel approach combining deformation-dependent mass formalism with Coriolis effects in the Bohr Hamiltonian for odd-mass nuclei, enhancing the understanding of nuclear structure.

Findings

Accurate excitation energies for 173Yb, 163Dy, 155Eu, 153Eu.

B(E2) transition probabilities match experimental data.

Significant impact of DDMF and Coriolis force on nuclear observables.

Abstract

Within the collective Bohr Hamiltonian, the adoption of a mass tensor as a function of collective coordinates has demonstrated its importance for describing the structure of nuclei. On the other hand, for odd-mass nuclei, the Coriolis interaction between the rotational and single-particle motions affects significantly the structure of nuclear excited states. In the framework of a recently developed extended Bohr Hamiltonian, by considering the Deformation-Dependent Mass Formalism whith different mass parameters for the rotation and the two \betha and \gamma vibrations and taking into account the Coriolis contribution, we investigate the bands structure of the 173Yb, 163Dy, 155Eu and 153Eu nuclei. Excited-state energies and B(E2) transition probabilities are calculated and compared with the available experimental data. Besides, we investigate the effect of DDMF and the Coriolis force on nuclear observables.