Cross-sections for the 27Al(γ, x)22Na multichannel reaction with the 28.3 MeV difference of reaction thresholds

Abstract

Abstract The bremsstrahlung flux-averaged cross-sections and the cross-sections per equivalent photon were first measured for the photonuclear multichannel reaction at end-point bremsstrahlung gamma energies ranging from 35 MeV to 95 MeV. The experiments were performed with the beam from the NSC KIPT electron linear accelerator LUE-40 using the γ-activation technique. The bremsstrahlung quantum flux was calculated with the GEANT4.9.2 program and was also monitored via the reaction. The flux-averaged cross-sections were calculated using the partial cross-section values computed with the TALYS1.95 code for different level density models. Consideration is given to special features of calculating the cross-sections and for the case of the final nucleus via several partial channels : .