Low Energy States of $^{81}_{31} Ga_{50}$ : Elements on the Doubly-Magic Nature of $^{78}$Ni

Verney, David; Bourgeois, C.; Donzaud, C.; Essabaa, S.; Gales, S.; Gaudefroy, L.; Guillemaud-Mueller, D.; Hammache, F.; Ibrahim, F.; Lau, C.; Blanc, F. Le; Mueller, A. C.; Perru, O.; Pougheon, F.; Roussiere, B.; Sauvage, J.; Sorlin, O.; Verney, D.

Low Energy States of $^{81}_{31} Ga_{50}$ : Elements on the Doubly-Magic Nature of $^{78}$Ni

Authors

Guillemaud-Mueller, D.

Hammache, F.

Ibrahim, F.

Lau, C.

Description

Excited levels were attributed to $^{81}_{31}$Ga$_{50}$ for the first time which were fed in the $β$-decay of its mother nucleus $^{81}$Zn produced in the fission of $^{nat}$U using the ISOL technique. We show that the structure of this nucleus is consistent with that of the less exotic proton-deficient N=50 isotones within the assumption of strong proton Z=28 and neutron N=50 effective shell effects.
4 pages, REVTeX 4, 5 figures (eps format)