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Sahin, E.; de Angelis, G.; Duchene, G.; Faul, T.; Gadea, A.; Lisetskiy, A.F.; Ackermann, D.; Algora, A.; Aydin, S.; Azaiez, F.; Bazzacco, D.; Benzoni, G.; Bostan, M.; Byrski, T.; Celikovic, I.; Chapman, R.; Corradi, L.; Courtin, S.; Curien, D.; Pramanik, U. Datta; Didierjean, F.; Dorvaux, O.; Erduran, M.N.; Erturk, S.; Farnea, E.; Fioretto, E.; de France, G.; Franchoo, S.; Gall, B.; Gottardo, A.; Guiot, B.; Haas, F.; Ibrahim, F.; Ince, E.; Khouaja, A.; Kusoglu, A.; La Rana, G.; Labiche, M.; Lebhertz, D.; Lenzi, S.; Leoni, S.; Lunardi, S.; Mason, P.; Mengoni, D.; Michelagnoli, C.; Modamio, V.; Montagnoli, G.; Montanari, D.; Moro, R.; Mouginot, B.; Napoli, D.R.; OʼDonnell, D.; Oliveira, J.R.B.; Ollier, J.; Orlandi, R.; Pollarolo, G.; Recchia, F.; Robin, J.; Salsac, M.-D.; Scarlassara, F.; Singh, R.P.; Silvestri, R.; Smith, J.F.; Stefan, I.; Stefanini, A.M.; Subotic, K.; Szilner, S.; Tonev, D.; Torres, D.A.; Trotta, M.; Ujic, P.; Ur, C.; Valiente-Dobón, J.J.; Verney, D.; Yalcinkaya, M.; Wady, P.T.; Wiedemann, K.T.; Zuber, K.
Nuclear physics. A, 11/2012, Letnik: 893Journal Article
The level structures of the N=5083As, 82Ge, and 81Ga 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 γ-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 78Ni (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.
