Revised spin values of the 991 keV and 1599 keV levels in 140Sm

The previously accepted spin values of the 991 and 1599 keV levels in $^{140}\mathrm{Sm}$ have been revised and established as $2{}^{+}$ and $0{}^{(+)}$, respectively. The $\ensuremath{\gamma}\text{\ensuremath{-}}\ensuremath{\gamma}$ angular correlation method was used to determine the new spin values. The excited low-spin levels in $^{140}\mathrm{Sm}$ were populated in the $^{140}\mathrm{Eu}{\ensuremath{\rightarrow}}^{140}\mathrm{Sm}$ and $^{140}\mathrm{Gd}\ensuremath{\rightarrow} ^{140}\mathrm{Eu}{\ensuremath{\rightarrow}}^{140}\mathrm{Sm}$ decays. The $^{140}\mathrm{Gd}$ and $^{140}\mathrm{Eu}$ nuclei were produced in the $^{112}\mathrm{Cd}+^{32}\mathrm{S}$ reaction at a beam energy of 155 MeV.