Reaction Cross Section for Low-Energy Alpha Particles onCo59

The reaction cross sections for $\alpha$ particles in the energy range 12.5-18.7 MeV with ${}_{}{}^{59}{}_{}{}^{}\mathrm{Co}$ were determined by summing measurements of the cross sections for the ($\alpha , n$) reaction and those for charged-particle emission. These results are then combined with other reported investigations to obtain the reaction cross sections for incident $\alpha$-particle energies 8-25 MeV. Comparison of these results with those from an optical-model calculation gives excellent agreement.