Mass and beta decay ofAs68

${}_{33}{}^{68}{}_{}{}^{}\mathrm{As}_{35}^{}{}_{}{}^{}$ was produced by the ${}_{}{}^{58}{}_{}{}^{}\mathrm{Ni}({}_{}{}^{12}{}_{}{}^{}\mathrm{C}, pn){}_{}{}^{68}{}_{}{}^{}\mathrm{As}$ reaction at $E_{{}_{}{}^{12}{}_{}{}^{}\mathrm{C}}=32\mathrm{} \mathrm{and} 42$ MeV. $\gamma$ rays from the decay of ${}_{}{}^{68}{}_{}{}^{}\mathrm{As}$ were observed both in singles and coincidence using large Ge(Li) detectors. This work yielded a more accurate half-life for ${}_{}{}^{68}{}_{}{}^{}\mathrm{As}$ (151.5 ± 0.9 sec) as well as the identification of several new levels in ${}_{}{}^{68}{}_{}{}^{}\mathrm{Ge}$, including a low-lying $0^{+}$ state. The ground-state spin of ${}_{}{}^{68}{}_{}{}^{}\mathrm{As}$ was determined to be $3^{\mathrm{}(+)\mathrm{}}$ and its total decay energy $Q_{\mathrm{EC}}$ was measured to be 8.1 ± 0.1 MeV. This corresponds to a mass excess of -58.9 ± 0.1 MeV, which is compared with various predictions. Assignments or restrictions of the spin and parity for many states observed in ${}_{}{}^{68}{}_{}{}^{}\mathrm{Ge}$ have been made. The structure of ${}_{}{}^{68}{}_{}{}^{}\mathrm{Ge}$ is discussed in terms of a vibrational model.