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Title	Single-neutron orbits near $^{78}$Ni: Spectroscopy of the N=49 isotope $^{79}$Zn
Author(s)	Orlandi, R (Madrid, Inst. Estructura Materia ; Leuven U. ; West Scotland U. ; JAEA, Ibaraki ; SUPA, UK) ; Mücher, D (Munich, Tech. U.) ; Raabe, R (Leuven U.) ; Jungclaus, A (Madrid, Inst. Estructura Materia) ; Pain, S D (Oak Ridge) ; Bildstein, V (Munich, Tech. U.) ; Chapman, R (West Scotland U. ; SUPA, UK) ; de Angelis, G (INFN, Legnaro) ; Johansen, J G (Aarhus U.) ; Van Duppen, P (Leuven U.) ; Andreyev, A N (West Scotland U. ; York U. ; JAEA, Ibaraki ; SUPA, UK) ; Bottoni, S (Leuven U. ; INFN, Milan) ; Cocolios, T E (Manchester U.) ; De Witte, H (Leuven U.) ; Diriken, J (Leuven U.) ; Elseviers, J (Leuven U.) ; Flavigny, F (Leuven U.) ; Gaffney, L P (Liverpool U. ; Leuven U.) ; Gernhäuser, R (Munich, Tech. U.) ; Gottardo, A (INFN, Legnaro) ; Huyse, M (Leuven U.) ; Illana, A (Madrid, Inst. Estructura Materia) ; Konki, J (CERN ; Helsinki Inst. of Phys. ; Jyvaskyla U.) ; Kröll, T (Darmstadt, Tech. Hochsch.) ; Krücken, R (Munich, Tech. U.) ; Lane, J F W (West Scotland U. ; SUPA, UK) ; Liberati, V (West Scotland U. ; SUPA, UK) ; Marsh, B (CERN) ; Nowak, K (Munich, Tech. U.) ; Nowacki, F (Strasbourg, IPHC) ; Pakarinen, J (CERN ; Helsinki Inst. of Phys. ; Jyvaskyla U.) ; Rapisarda, E (Leuven U.) ; Recchia, F (INFN, Padua) ; Reiter, P (Cologne U.) ; Roger, T (KU Leuven, Dept. Phys. Astron. ; GANIL) ; Sahin, E (INFN, Legnaro) ; Seidlitz, M (Cologne U.) ; Sieja, K (Strasbourg, IPHC) ; Smith, J F (West Scotland U. ; SUPA, UK) ; Valiente Dobón, J J (INFN, Legnaro) ; von Schmid, M (Darmstadt, Tech. Hochsch.) ; Voulot, D (CERN) ; Warr, N (Cologne U.) ; Wenander, F K (CERN) ; Wimmer, K (Munich, Tech. U.)
Publication	2015
Number of pages	5
In:	Phys. Lett. B 740 (2015) 298-302
DOI	10.1016/j.physletb.2014.12.006
Subject category	Nuclear Physics - Experiment
Accelerator/Facility, Experiment	CERN ISOLDE
Abstract	Single-neutron states in the Z=30 , N=49 isotope 79 Zn have been populated using the 78 Zn(d, p) 79 Zn transfer reaction at REX-ISOLDE, CERN. The experimental setup allowed the combined detection of protons ejected in the reaction, and of γ rays emitted by 79 Zn. The analysis reveals that the lowest excited states populated in the reaction lie at approximately 1 MeV of excitation, and involve neutron orbits above the N=50 shell gap. From the analysis of γ -ray data and of proton angular distributions, characteristic of the amount of angular momentum transferred, a 5/2+ configuration was assigned to a state at 983 keV. Comparison with large-scale-shell-model calculations supports a robust neutron N=50 shell-closure for 78 Ni. These data constitute an important step towards the understanding of the magicity of 78 Ni and of the structure of nuclei in the region.
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