TY  - JOUR
AU  - Sahin, E. et al
AU  - Gadea, A.
AU  - Algora, A.
PY  - 2012
DA  - 2012//
TI  - Structure of the N=50 As, Ge, Ga nuclei
T2  - Nucl. Phys. A
JO  - Nuclear Physics A
SP  - 1
EP  - 12
VL  - 893
PB  - Elsevier Science Bv
KW  - NUCLEAR REACTIONS U-238(Se-82
KW  - Ga-81)
KW  - (Se-82
KW  - Ge-82)
KW  - As-83)
KW  - E=515 MeV
KW  - measured E-gamma
KW  - I-gamma (theta)
KW  - gamma gamma-coin
KW  - reaction fragments
KW  - (fragment)gamma-coin using PRISMA magnetic spectrometer
KW  - gamma after deexcitation using Ge Compton-suppressed detectors of CLARA array
KW  - thin and thick target
KW  - deduced sigma(theta)
KW  - levels
KW  - J
KW  - pi
KW  - calculated levels
KW  - pi using shell model
AB  - 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.
SN  - 0375-9474
UR  - https://doi.org/10.1016/j.nuclphysa.2012.08.007
DO  - 10.1016/j.nuclphysa.2012.08.007
LA  - English
N1  - WOS:000310091000001
ID  - Sahin_etal2012
ER  -