The level structure of ${}_{}{}^{97}{}_{}{}^{}\mathrm{Tc}$ up to 2700 keV excitation has been studied via measurements of gamma ray yields and via $n-\gamma$ and $\gamma -\gamma$ coincidence experiments following the ${}_{}{}^{97}{}_{}{}^{}\mathrm{Mo}(p, n\gamma )$ reaction with proton energies between 2.0 and 5.2 MeV. From these experiments a decay scheme of ${}_{}{}^{97}{}_{}{}^{}\mathrm{Tc}$ which includes 78 levels has been obtained. Angular distribution measurements of gamma rays deexciting and exciting these levels provided reliable multipole mixing ratios and $J^{\pi }$ assignments for several transitions and states.

NUCLEAR REACTIONS ${}_{}{}^{97}{}_{}{}^{}\mathrm{Mo}(p, n\gamma ){}_{}{}^{97}{}_{}{}^{}\mathrm{Tc}$, $E=2.0-5.2\mathrm{}$ MeV; measured $E_{\gamma }$, $n-\gamma$, $\gamma -\gamma$ coincidences, $\gamma$-ray angular distributions; ${}_{}{}^{97}{}_{}{}^{}\mathrm{Tc}$ deduced levels, $J^{\pi }$; enriched targets, Ge(Li) detectors.

• Received 1 April 1982

DOI:https://doi.org/10.1103/PhysRevC.26.1451