The ${}_{}{}^{31}{}_{}{}^{}\mathrm{P}(\alpha , n)$ ${}_{}{}^{34}{}_{}{}^{}\mathrm{Cl}$ reaction at 13.0 and 14.6 MeV $\alpha$ energies was used to investigate ${}_{}{}^{34}{}_{}{}^{}\mathrm{Cl}$ levels at 4743 keV ($J^{\pi }=6^{-}$), 3632 keV ($J^{\pi }=5^{-}$), and 3600 keV ($J^{\pi }=4^{-}$) excitation energy. Angular distribution measurements and lifetime determinations by the recoil distance method were performed. Lifetimes of 7±3, 280±60, and 23±5 ps were obtained for the 4743, 3632, and 3600 keV levels, respectively. The value of the lifetime for the 4743 keV level yields a negative parity assignment for this state. Strong $E2\mathrm{}$ and $E3\mathrm{}$ deduced transition strengths are related to the transition strengths deexciting quadrupole and octupole vibrations in the core nucleus ${}_{}{}^{32}{}_{}{}^{}\mathrm{S}$.

NUCLEAR REACTIONS ${}_{}{}^{31}{}_{}{}^{}\mathrm{P}(\alpha , n)$, $E_{\alpha }=13.0\mathrm{} \mathrm{and} 14.6$ MeV; measured $\sigma (E_{\gamma }, \theta )$ and RDM, deduced $\delta$, $\tau$, and $\pi$. Natural targets. Ge(Li) detectors.

• Received 30 May 1978

DOI:https://doi.org/10.1103/PhysRevC.18.2470