Low-Lying States inSb122from theSn122(p,n)Reaction

The low-lying level structure of ${}_{}{}^{122}{}_{}{}^{}\mathrm{Sb}$ is studied through the observation of coincident $\gamma$ rays following the ${}_{}{}^{122}{}_{}{}^{}\mathrm{Sn}\mathrm{}(p,n)\mathrm{}$ reaction using two Ge(Li) detectors. Thirteen 1024-channel coincidence $\gamma$-ray spectra were obtained simultaneously in a PDP-7 computer by means of a two-parameter program. High-resolution singles spectra taken with a small-volume thin-window Ge(Li) detector (full width at half maximum approximately 0.6 keV at 121 keV) were also helpful in determining a level scheme for ${}_{}{}^{122}{}_{}{}^{}\mathrm{Sb}$. A ($d,p$) experiment was also performed in order to gain additional information. The information obtained from the ($p,n$) reaction was combined with existing ${}_{}{}^{121}{}_{}{}^{}\mathrm{Sb}\mathrm{}(d,p)\mathrm{}$ and ${}_{}{}^{121}{}_{}{}^{}\mathrm{Sb}(n,\gamma )$ data in constructing a proposed level scheme for ${}_{}{}^{122}{}_{}{}^{}\mathrm{Sb}$.