Identification of isomers in theN=Z+1nucleus95Ag

Abstract

Three $\ensuremath{\gamma}$-decaying isomers in the $N=Z+1$ nucleus ${}^{95}\mathrm{Ag}$ have been identified for the first time. The ${}^{95}\mathrm{Ag}$ nuclei were produced via the ${}^{58}\mathrm{Ni}{(}^{40}\mathrm{Ca},p2n)$ reaction and separated by using the GSI on-line mass separator. The emitted $\ensuremath{\gamma}$ rays were measured with a multi-Ge detector setup in anticoincidence with positrons. Three individual $\ensuremath{\gamma}$-decay cascades have been identified and assigned to ${}^{95}\mathrm{Ag},$ representing the depopulation of isomers at 344-, 2531-, and 4859-keV excitation energy with tentative spin-parity assignments of ${(1/2}^{\ensuremath{-}}),{(23/2}^{+}),$ and ${(37/2}^{+}),$ respectively. The spin and parity assignments are based on a comparison with shell-model predictions employing empirical interactions.