Low lying states in ${}_{}{}^{127}{}_{}{}^{}\mathrm{Xe}$: Implications for the efficiency of an ${}_{}{}^{127}{}_{}{}^{}\mathrm{I}$ solar $\nu$ detector

Spectroscopic information about ${}_{}{}^{127}{}_{}{}^{}\mathrm{Xe}$ is obtained by studying $\gamma$ rays following the $\beta$ decay of ${}_{}{}^{127}{}_{}{}^{}\mathrm{Cs}$. The results are of interest for determining the efficiency of a proposed ${}_{}{}^{127}{}_{}{}^{}\mathrm{I}$-based $\nu$ detector.