High-spin states in ${}_{}{}^{34}{}_{}{}^{}\mathrm{Cl}$ were populated in the ${}_{}{}^{27}{}_{}{}^{}\mathrm{Al}({}_{}{}^{12}{}_{}{}^{}\mathrm{C}, \alpha n){}_{}{}^{34}{}_{}{}^{}\mathrm{Cl}$ fusion-evaporation reaction between 27 and 45 MeV incident energy and in the ${}_{}{}^{31}{}_{}{}^{}\mathrm{P}(\alpha , n){}_{}{}^{34}{}_{}{}^{}\mathrm{Cl}$ reaction at 14.4 MeV. The decay scheme is obtained from $\gamma -\gamma$ and $n-\gamma$ coincidence measurements. The $J^{\pi }$ assignments for the levels at 4743, 4824, and 5315 keV result from angular distributions, directional correlation ratios, and excitation functions. The lifetime of the 5315 keV level was measured in a recoil distance experiment.

NUCLEAR REACTIONS ${}_{}{}^{27}{}_{}{}^{}\mathrm{Al}({}_{}{}^{12}{}_{}{}^{}\mathrm{C}, \alpha n){}_{}{}^{34}{}_{}{}^{}\mathrm{Cl}$; measured $\gamma -\gamma$ coinc and $\sigma (E\gamma , \theta )$ at $E_{\mathrm{lab}}=40\mathrm{}$ MeV and $\sigma \mathrm{}\left(E\right)\mathrm{}$ from 27 to 45 MeV; ${}_{}{}^{31}{}_{}{}^{}\mathrm{P}(\alpha , n){}_{}{}^{34}{}_{}{}^{}\mathrm{Cl}$, $E_{\alpha }=14.4\mathrm{}$ MeV, measured $n-\gamma$ coinc, ${}_{}{}^{34}{}_{}{}^{}\mathrm{Cl}$ deduced levels, $J^{\pi }$. Measured R. D. M., deduced $\tau$. Natural targets, Ge(Li) detectors, liquid scintillator. Comparison with theoretical weak-coupling model.

• Received 7 November 1977

DOI:https://doi.org/10.1103/PhysRevC.18.247