Abstract
The photo-neutron flux-weighted average cross-sections for 93Nb(γ,xn) reactions at the bremsstrahlung end-point energies of 20 MeV and 67 MeV have been measured by the activation technique using the electron linear accelerator LUE-75 located at the A.I. Alikhanyan National Science Laboratory (AANL). Furthermore, the isomeric cross-section ratio has been determined for the 89m,gNb isomeric pair. TALYS 1.96 and EMPIRE 3.2 nuclear codes were used to calculate the 93Nb(γ,xn) reaction cross-sections and isomeric ratio as functions of bremsstrahlung end-point energy. The energy distribution of bremsstrahlung photons has been calculated by GEANT4. The measured experimental data has been compared with currently available literature data as well as with the values based on theoretical calculations.
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