Partenaires

CNRS IN2P3 CNRS


Rechercher

Sur ce site

Sur le Web du CNRS


Accueil du site > FRANCAIS > Communication > Séminaires > Année 2009 > Investigation of nuclear shell structure far from stability in the region of 78Ni


Investigation of nuclear shell structure far from stability in the region of 78Ni

Eda Sahin, LNL Legnaro
Mercredi 15 Juillet 2009 à 10h30 - Salle des Séminaires

The level structures of the N=50 83As, 82Ge and 81Ga isotones have been investigated by means of the multi-nucleon transfer and deep inelastic reaction 82Se on 238U at 515 MeV. Gamma-rays deexciting states of the nuclei of interest have been identified using the CLARA-PRISMA array. g -ray coincidence information has been obtained by means of a complementary experiment performed at the GASP array. The collected information on the high spin states of such nuclei is used to test the stability of the N=50 shell closure in the region of 78Ni. Through the comparison of the experimentally determined level energies with the results of detailed shell-model calculations, an energy gap value of 4.7(2) MeV is extracted for Z=28. This result, in good agreement with the prediction of the finite-range liquid-drop model, excludes a weakening of the N=50 shell gap down to Z=28.

Dans la même rubrique :