Spectroscopic properties of neutron rich nuclei beyond 132Sn and seniority mixing

11th International Spring Seminar on Nuclear Physics: Shell Model and Nuclear Structure – achievements of the past two decades

Naïdja, H.^1,2,3,4 ; Nowacki, F.^1,2 ; Sieja, K.^1,2

Université de Strasbourg, IPHC, 23 rue du Loess, Strasbourg

67037, France^1

CNRS, UMR7178, Strasbourg

67037, France^2

GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt

64291, Germany^3

Université Constantine 1, LPMS, 1 route Ain El Bey, Constantine

25000, Algeria^4

关键词: Core excitation;    Electromagnetic transitions;    Low-lying state;    Neutron-rich nuclei;    Shell models;    Spectroscopic property;    Transition rates;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/580/1/012030/pdf
DOI  :  10.1088/1742-6596/580/1/012030

来源: IOP

【 摘 要 】

Within the shell model, our calculations have been focused on the study of the spectroscopic properties of the even-even tin isotopes around132Sn. In particular the calculations of the low-lying states 0+, 2+, 4+, 6+ energies, and differents electromagnetic transitions B(E2, J + 2 J) have been carried out. Two important points are discussed: the effect of the core excitations on the structure and transition rates in this region, and the possible closure of the sub-shell at N=90.