The ${}^{92}\mathrm{Mo}$($\alpha ,n$)${}^{95}\mathrm{Ru}$, ${}^{94}\mathrm{Mo}$($\alpha ,n$)${}^{97}\mathrm{Ru}$, and ${}^{112}\mathrm{Sn}$($\alpha ,\gamma$)${}^{116}\mathrm{Te}$ cross sections were measured at the upper end of the $p$-process Gamow window between 8.2 and 11.1 MeV. Our results are slightly lower than global Hauser-Feshbach calculations from the code NON-SMOKER, but still within the uncertainty of the prediction. The ${}^{112}\mathrm{Sn}$($\alpha ,\gamma$)${}^{116}\mathrm{Te}$ cross section agrees well with a recently measured thick-target cross section in the same energy range. For the ${}^{92,94}\mathrm{Mo}$($\alpha ,n$) reactions the present data close to the reaction thresholds could eliminate previous uncertainties within a factor of 20, and we can present now useful comparisons to statistical model calculations with different optical potentials.

• Received 20 February 2008

DOI:https://doi.org/10.1103/PhysRevC.78.025804