(EC+${\mathrm{\beta }}^{+}$) decay of ${}_{}{}^{157}{}_{}{}^{}\mathrm{Yb}$

${}_{}{}^{157}{}_{}{}^{}\mathrm{Yb}$ has been produced by irradiation of ${}_{}{}^{147}{}_{}{}^{}\mathrm{Sm}$ with ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, and studied using a He-jet recoil tape transport system. A decay scheme is proposed for the first time, based on x-γ and γ-γ coincidence measurements, which takes account of 25 observed γ rays.