Cross-section of the \({^\textrm{nat}\textrm{Ni}}(\gamma ,\textrm{p} x\textrm{n})^{58}\textrm{Co}\) reaction at the bremsstrahlung end-point energy of 35–94 MeV

The photoproduction of the \(^{58}\textrm{Co}\) nuclei on \({^\textrm{nat}\textrm{Ni}}\) was studied using the induced \(\gamma \)-activity method and offline \(\gamma \)-ray spectrometric technique. The experiment was performed at the electron linear accelerator LUE-40 of NSC KIPT, Ukraine. The total flux-averaged cross-section \(\langle {\sigma (E_{\gamma \textrm{max}})}\rangle \) for the \({^\textrm{nat}\textrm{Ni}}(\gamma ,\textrm{p} x\mathrm n)^{58}\textrm{Co}\) reaction has been measured in the range of bremsstrahlung end-point energies \(E_{\gamma \textrm{max}}\) = 35–94 MeV. The obtained \(\langle {\sigma (E_{\gamma \textrm{max}})}\rangle \) were compared with theoretical estimates, and with experimental data found in the literature. The theoretical values of \(\langle {\sigma (E_{\gamma \textrm{max}})}\rangle _\textrm{th}\) were calculated using the partial cross-sections \(\sigma (E)\) from the TALYS1.96 code for different level density models and gamma strength functions.