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Coulomb excitation of the N=50 nucleus Zn-80

J. V. de Walle ; F. Aksouh ; F. Ames ; T. Behrens ; V. Bildstein ; A. Blazhev ; J. Cederkall ; E. Clement ; T. E. Cocolios ; T. Davinson ; P. Delahaye ; J. Eberth ; A. Ekstrom ; 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. Koster ; T. Kroll ; R. Krucken ; M. Lauer ; A. F. Lisetskiy ; R. Lutter ; B. A. Marsh ; P. Mayet ; O. Niedermaier ; Thomas Nilsson (Institutionen för fundamental fysik, Subatomär fysik) ; 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-Dobon ; P. Van Duppen ; D. Verney ; D. Voulot ; N. Warr ; D. Weisshaar ; Fredrik Wenander ; B. H. Wolf ; M. Zielinska
Frontiers in Nuclear Structure, Astrophysics, and Reactions (0094-243X). Vol. 1012 (2008), p. 291-295 453.
[Konferensbidrag, refereegranskat]

Neutron rich Zinc isotopes, including the N=50 nucleus Zn-80, were produced and post-accelerated at the Radioactive Ion Beam (RIB) facility REX-ISOLDE (CERN). Low-energy Coulomb excitation was induced on these isotopes after post-acceleration, yielding B(E2) strengths to the first excited 2(+) states. For the first time, an excited state in Zn-80 was observed and the 2(1)(+) state in Zn-78 was established. The measured B(E2,2(1)(+) -> 0(1)(+)) values are compared to two sets of large scale shell model calculations. Both calculations reproduce the observed B(E2) systematics for the full Zinc isotopic chain. 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 Ni-78.

Nyckelord: nuclear structure, radioactive ion beams, coulomb excitation, isotopes, isolde, beams



Denna post skapades 2008-11-28. Senast ändrad 2014-09-02.
CPL Pubid: 79216

 

Institutioner (Chalmers)

Institutionen för fundamental fysik, Subatomär fysik (2005-2013)

Ämnesområden

Lågenergifysik

Chalmers infrastruktur