de Angelis, GiacomoDuchene, Gilbert G.Gadea, AndrésLisetskiy, Alexander F.Ackermann, DieterAydın, SezginAzaiez, Faiçal A.Bazzacco, Dino B.13.07.20192019-07-1613.07.20192019-07-1620120375-9474https://dx.doi.org/10.1016/j.nuclphysa.2012.08.007https://hdl.handle.net/20.500.12451/2729The level structures of the N=50 83 As, 82 Ge, and 81 Ga 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 ?-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 78 Ni (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. © 2012 Elsevier B.V.eninfo:eu-repo/semantics/closedAccessCalculatedDeducedMeasuredNuclear ReactionsArticle89311210.1016/j.nuclphysa.2012.08.007Q2N/A