Abstract
The level structures of the N=50 83As, 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.
| Lingua originale | Inglese |
|---|---|
| pagine (da-a) | 1-12 |
| Numero di pagine | 12 |
| Rivista | Nuclear Physics A |
| Volume | 893 |
| DOI | |
| Stato di pubblicazione | Pubblicato - 2 nov 2012 |
| Pubblicato esternamente | Sì |