Energy levels below 2 MeV in /sup 121/Sb and /sup 123/Sb

Energy levels below 2 MeV in $^{121}\mathrm{Sb}$ and $^{123}\mathrm{Sb}$ have been studied using the $^{121,123}\mathrm{Sb}$($n$,${n}^{\ensuremath{'}}\ensuremath{\gamma}$) and $^{120}\mathrm{Sn}$($p$,$\ensuremath{\gamma}$) reactions. $\ensuremath{\gamma}$-ray angular distributions have been measured and spins and $\ensuremath{\gamma}$-ray multipole mixing ratios deduced. Spin assignments have been made for the $1025 (\frac{7}{2})$, $1036 (\frac{9}{2})$, and $1145 (\frac{9}{2})$ keV levels in $^{121}\mathrm{Sb}$, and an assignment of $\frac{9}{2}$ is suggested for the 1030 keV level in $^{123}\mathrm{Sb}$. Present and previous results are discussed in the framework of an intermediate coupling model.NUCLEAR REACTIONS $^{121,123}\mathrm{Sb}$($n$,${n}^{\ensuremath{'}}\ensuremath{\gamma}$), $E=1.5\ensuremath{-}2.7$ MeV; measured ${E}_{\ensuremath{\gamma}}$, $\ensuremath{\sigma}({E}_{\ensuremath{\gamma}},{\ensuremath{\theta}}_{\ensuremath{\gamma}})$, branching ratios; $^{121,123}\mathrm{Sb}$ deduced levels, $J$, $\ensuremath{\delta}$; natural targets. $^{120}\mathrm{Sn}$($p$,$\ensuremath{\gamma}$), $E=3.4$ MeV; measured ${E}_{\ensuremath{\gamma}}$; enriched target. Intermediate coupling model calculations.