### Abstract

The 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 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 ^{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.

Original language | English |
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Pages (from-to) | 1-12 |

Number of pages | 12 |

Journal | Nuclear Physics A |

Volume | 893 |

DOIs | |

Publication status | Published - Nov 2 2012 |

### Keywords

- Calculated
- Deduced
- Measured
- Nuclear reactions

### ASJC Scopus subject areas

- Nuclear and High Energy Physics

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## Cite this

*Nuclear Physics A*,

*893*, 1-12. https://doi.org/10.1016/j.nuclphysa.2012.08.007