Photoactivation of the 391.69 keV isomer state of In113m by the ( γ,2n ) reaction

Natural indium targets were exposed to high-energy bremsstrahlung radiation, from 9 MeV to 23 MeV. Using the measured γ spectra, the yield ratio of ¹¹³ᵐIn and ¹¹⁵ᵐIn was determined. It was checked to what extent the measured values of the yield ratio can be reproduced using the existing experimental data of cross sections of relevant photonuclear reactions, as well as cross sections obtained by talys calculations. The measured reaction yield ratio was used to reconstruct the energy differential cross section of ¹¹⁵In(γ,2n)¹¹³ᵐIn using the unfolding procedure.