%0 Journal Article %T Structure of the N=50 As, Ge, Ga nuclei %A Sahin, E. et al %A Gadea, A. %A Algora, A. %J Nuclear Physics A %D 2012 %V 893 %I Elsevier Science Bv %@ 0375-9474 %G English %F Sahin_etal2012 %O WOS:000310091000001 %O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1191), last updated on Thu, 13 Dec 2012 10:45:28 +0000 %X The 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. %K NUCLEAR REACTIONS U-238(Se-82 %K Ga-81) %K (Se-82 %K Ge-82) %K As-83) %K E=515 MeV %K measured E-gamma %K I-gamma (theta) %K gamma gamma-coin %K reaction fragments %K (fragment)gamma-coin using PRISMA magnetic spectrometer %K gamma after deexcitation using Ge Compton-suppressed detectors of CLARA array %K thin and thick target %K deduced sigma(theta) %K levels %K J %K pi %K calculated levels %K pi using shell model %R 10.1016/j.nuclphysa.2012.08.007 %U https://doi.org/10.1016/j.nuclphysa.2012.08.007 %P 1-12