Sahin, E.de Angelis, G.Duchene, G.Faul, T.Gadea, A.Lisetskiy, A. F.Byrski, T.2019-08-012019-08-0120120375-94741873-1554https://dx.doi.org/10.1016/j.nuclphysa.2012.08.007https://hdl.handle.net/11480/4520The level structures of the N = 50 As-83, Ge-82, and Ga-81 isotones have been investigated by means of multi-nucleon transfer reactions. A first experiment was performed with the CLARA PRISMA setup to identify these nuclei. A second experiment was carried out with the GASP array in order to deduce the gamma-ray coincidence information. The results obtained on the high-spin states of such nuclei are used to test the stability of the N = 50 shell closure in the region of Ni-78 (Z = 28). The comparison of the experimental level schemes with the shell-model calculations yields an N = 50 energy gap value of 4.7(3) MeV at Z = 28. This value, in a good agreement with the prediction of the finite-range liquid-drop model as well as with the recent large-scale shell model calculations, does not support a weakening of the N = 50 shell gap down to Z = 28. (c) 2012 Elsevier B.V. All rights reserved.eninfo:eu-repo/semantics/closedAccessNUCLEAR REACTIONS U-238(Se-82, Ga-81), (Se-82, Ge-82), (Se-82, As-83)E=515 MeVmeasured E gammaI gamma (theta)gamma gamma-coin, reaction fragments(fragment)gamma-coinPRISMA magnetic spectrometergamma after deexcitationGe Compton-suppressed detectors of CLARA arraythin and thick targetdeduced sigma(theta)levelsJ, pi calculated levelsJ, pi using shell modelArticle89311210.1016/j.nuclphysa.2012.08.0072-s2.0-84866013918Q2WOS:000310091000001Q3