| Literature DB >> 17930664 |
J Van de Walle1, F Aksouh, F Ames, T Behrens, V Bildstein, A Blazhev, J Cederkäll, E Clément, T E Cocolios, T Davinson, P Delahaye, J Eberth, A Ekström, D V Fedorov, V N Fedosseev, L M Fraile, S Franchoo, R Gernhauser, G Georgiev, D Habs, K Heyde, G Huber, M Huyse, F Ibrahim, O Ivanov, J Iwanicki, J Jolie, O Kester, U Köster, T Kröll, R Krücken, M Lauer, A F Lisetskiy, R Lutter, B A Marsh, P Mayet, O Niedermaier, T Nilsson, M Pantea, O Perru, R Raabe, P Reiter, M Sawicka, H Scheit, G Schrieder, D Schwalm, M D Seliverstov, T Sieber, G Sletten, N Smirnova, M Stanoiu, I Stefanescu, J-C Thomas, J J Valiente-Dobón, P Van Duppen, D Verney, D Voulot, N Warr, D Weisshaar, F Wenander, B H Wolf, M Zielińska.
Abstract
Neutron-rich, radioactive Zn isotopes were investigated at the Radioactive Ion Beam facility REX-ISOLDE (CERN) using low-energy Coulomb excitation. The energy of the 2(1)+ state in 78Zn could be firmly established and for the first time the 2+ --> 0(1)+ transition in 80Zn was observed at 1492(1) keV. B(E2,2(1)+ --> 0(1)+) values were extracted for (74,76,78,80)Zn and compared to large scale shell model calculations. With only two protons outside the Z=28 proton core, 80Zn is the lightest N=50 isotone for which spectroscopic information has been obtained to date. Two sets of advanced shell model calculations reproduce the observed B(E2) systematics. The results for N=50 isotones indicate a good N=50 shell closure and a strong Z=28 proton core polarization. The new results serve as benchmarks to establish theoretical models, predicting the nuclear properties of the doubly magic nucleus 78Ni.Entities:
Year: 2007 PMID： 17930664 DOI： 10.1103/PhysRevLett.99.142501
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161