Shape coexistence and the N=28 shell closure far from stability

Citation
F. Sarazin et al., Shape coexistence and the N=28 shell closure far from stability, PHYS REV L, 84(22), 2000, pp. 5062-5065
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
84
Issue
22
Year of publication
2000
Pages
5062 - 5065
Database
ISI
SICI code
0031-9007(20000529)84:22<5062:SCATNS>2.0.ZU;2-8
Abstract
The masses of 31 neutron-rich nuclei in the range A = 29-47 have been measu red. The precision of 19 masses has been significantly improved and 12 mass es were measured for the first time. The neutron-rich Cl, S, and P isotopes are seen to exhibit a change in shell structure around N = 28. Comparison with shell model and relativistic mean field calculations demonstrate that the observed effects arise from deformed prolate ground state configuration s associated with shape coexistence. Evidence for shape coexistence is prov ided by the observation of an isomer in S-43.