Coulomb excitation of neutron-rich Zn isotopes: First observation of the 2(1)(+) state in Zn-80
- Van de Walle, J.
- Aksouh, F.
- Ames, F.
- Behrens, T.
- Bildstein, V.
- Blazhev, A.
- Cederkäll, Joakim
- Clement, E.
- Cocolios, T. E.
- Davinson, T.
- Delahaye, P.
- Eberth, J.
- Ekström, Andreas
- Fedorov, D. V.
- Fedosseev, V. N.
- Fraile, L. M.
- Franchoo, S.
- Gernhauser, R.
- Georgiev, G.
- Habs, D.
- Heyde, K.
- Huber, G.
- Huyse, M.
- Ibrahim, F.
- Ivanov, O.
- Iwanicki, J.
- Jolie, J.
- Kester, O.
- Koester, U.
- Kroell, T.
- Kruecken, R.
- Lauer, M.
- Lisetskiy, A. F.
- Lutter, R.
- Marsh, B. A.
- Mayet, P.
- Niedermaier, O.
- Nilsson, T.
- Pantea, M.
- Perru, O.
- Raabe, R.
- Reiter, P.
- Sawicka, M.
- Scheit, H.
- Schrieder, G.
- Schwalm, D.
- Seliverstov, M. D.
- Sieber, T.
- Sletten, G.
- Smirnova, N.
- Stanoiu, M.
- Stefanescu, I.
- Thomas, J.-C.
- Valiente-Dobon, J. J.
- Van Duppen, P.
- Verney, D.
- Voulot, D.
- Warr, N.
- Weisshaar, D.
- Wenander, F.
- Wolf, B. H.
- Zielinska, M.
DOIAbstract
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 Zn-78 could be firmly established and for the first time the 2(+)-> 0(1)(+) transition in Zn-80 was observed at 1492(1) keV. B(E2,2(1)(+)-> 0(1)(+)) values were extracted for Zn-74,Zn-76,Zn-78,Zn-80 and compared to large scale shell model calculations. With only two protons outside the Z=28 proton core, Zn-80 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 stron...
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