Abstract
Within the shell-model framework the low-lying states energies, E2 and M1 transitions of chains of nuclei 52 ≤ Z ≤ 60 with 82 ≤ N ≤ 88 are investigated. We use the N3LOP effective interaction derived from Effective Field Theory Potentials and phenomenologically constrained. We noticed clear collective features in N = 86 and 88 isotones, with signature of triaxial γ-bands.
Highlights
Investigation of neutron rich nuclei in the vicinity of the robust 132 Sn core represents currently an attractive subject of nuclear structure research
The paper is organized as follows: After a briefly review in section 2 of shell-model tools used in this part of work, we expose in section 3 the energy levels, and the electromagnetic transitions of the nuclei of interest
Using the same effective interaction N3LOP, the spectroscopic properties of chains of nuclei Te, Xe, Ba, Ce and Nd with 82 ≤ N ≤ 88 are investigated, where a convincing agreement appears between our results and the experimental data
Summary
Investigation of neutron rich nuclei in the vicinity of the robust 132 Sn core represents currently an attractive subject of nuclear structure research. At the same time the continuous progress in the development of computational codes to treat the shell-model numerical challenge allied with development of modern realistic effective interactions opens new opportunities of successful theoretical approaches, to explore and gain more information from this heavy mass region nuclei. In this context, the low-lying spectra, E2 and M1 transition strengths of even-even chains of nuclei with 52 ≤ Z ≤ 60 and 82 ≤ N ≤ 88 are explored and extended compared to our previous works [1,2,3].
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