학술논문
Single-neutron orbits near 78Ni: Spectroscopy of the N=49 isotope 79Zn
Document Type
article
Author
R. Orlandi; D. Mücher; R. Raabe; A. Jungclaus; S.D. Pain; V. Bildstein; R. Chapman; G. de Angelis; J.G. Johansen; P. Van Duppen; A.N. Andreyev; S. Bottoni; T.E. Cocolios; H. De Witte; J. Diriken; J. Elseviers; F. Flavigny; L.P. Gaffney; R. Gernhäuser; A. Gottardo; M. Huyse; A. Illana; J. Konki; T. Kröll; R. Krücken; J.F.W. Lane; V. Liberati; B. Marsh; K. Nowak; F. Nowacki; J. Pakarinen; E. Rapisarda; F. Recchia; P. Reiter; T. Roger; E. Sahin; M. Seidlitz; K. Sieja; J.F. Smith; J.J. Valiente Dobón; M. von Schmid; D. Voulot; N. Warr; F.K. Wenander; K. Wimmer
Source
Physics Letters B, Vol 740, Iss , Pp 298-302 (2015)
Subject
Language
English
ISSN
0370-2693
Abstract
Single-neutron states in the Z=30, N=49 isotope 79Zn have been populated using the 78Zn(d, p)79Zn 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 79Zn. 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 78Ni. These data constitute an important step towards the understanding of the magicity of 78Ni and of the structure of nuclei in the region. Keywords: Nuclear structure, γ-Ray transitions, Transfer reactions, N=50 shell closure