17–21 Jul 2023
MAISON MINATEC
Europe/Paris timezone

Shape coexistence and mixing behind the isomers of 94Pd

21 Jul 2023, 13:50
15m
Amphitheater (MAISON MINATEC)

Amphitheater

MAISON MINATEC

Centre de Congrès Maison MINATEC 3 parvis Louis Néel 38054 Grenoble Cedex 9
Oral Theoretical Nuclear Structure Session 16

Speaker

Alexandrina Petrovici (IFIN-HH)

Description

The heaviest nuclei around the N = Z line offer new insights into the coexistence phenomena and the fundamental
symmetries. These exotic nuclei are of particular interest due to the open questions concerning the nature of the
observed isomers, the irregularities in the excitation spectra, and their feeding by the $\beta$ decay of the
neighboring nuclei. We investigated the evolution of shape coexistence and mixing in the structure of $^{94}$Pd
positive parity states and the nature of the isomeric states at spin $8^+$ and $14^+$ within the beyond-mean-field
$complex$ Excited Vampir model using an effective interaction derived from a nuclear matter G matrix based on the
charge-dependent Bonn CD potential in a large model space. Within the same theoretical framework we studied
the Gamow-Teller $\beta$ decay of the 7$^+$ isomer and the superallowed Fermi $\beta$ decay of the $0^{+}$ ground
state of $^{94}$Ag to $^{94}$Pd. Results on the structure and electromagnetic properties of positive parity states
up to spin $14^+$ in $^{94}$Pd as well as the strength distributions for the $^{94}$Ag $\beta$ decay feeding the
investigated states in $^{94}$Pd will be discussed and compared with the available experimental data [1].

[1] A. S. Mare and A. Petrovici, Phys. Rev. C {\bf 106}, 054306 (2022)

Primary author

Alexandrina Petrovici (IFIN-HH)

Presentation materials