Shell model and nuclear structure far from stability

Citation
F. Nowacki et E. Caurier, Shell model and nuclear structure far from stability, ACT PHY P B, 30(3), 1999, pp. 749-753
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA POLONICA B
ISSN journal
0587-4254 → ACNP
Volume
30
Issue
3
Year of publication
1999
Pages
749 - 753
Database
ISI
SICI code
0587-4254(199903)30:3<749:SMANSF>2.0.ZU;2-#
Abstract
We describe the properties of neutron-rich nuclei around N = 28 and N = 20 in the shell model framework. The valence space includes the sd shell for p rotons and pf shell for neutrons without any restrictions. Good agreement i s found with the available data and the N = 28 shell closure is shown to be persisting. Then we perform calculations in the N = 20 region where the va lence space is enlarged to include intruder states. We are able to account for the vanishing of the N = 20 neutron shell and the dominance of the intr uders explains the collective features experimentally found in this region.