Photo-neutron reaction cross-sections of 59Co in the bremsstrahlung end-point energies of 65 and 75 MeV

Photonuclear reactions on stable isotopes of selenium at bremsstrahlung end-point energies of 10−23 MeV

“…For the yield measurement for a natural mixture of isotopes the result is the yield of isotope production in all possible reactions on a The main disadvantage of beam experiments bremsstrahlung is that the yield of photonuclear reaction depends both on the studied cross section of the reaction σ(E) and the shape of the bremsstrahlung spectrum W(E, E γmax ), which is often known with insufficient accuracy. That's why the data obtained from the photonuclear experiment on bremsstrahlung beams are generally represented in terms of the relative yields or the integrated reaction cross section [33][34][35], the flux weighted average cross section <σ> [36][37][38][39][40][41][42][43], or the cross section per equivalent photon σ q [35,37,43,44].…”

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

“…At present, considerable research is being conducted to experimentally investigate the nuclear photodisintegration in the energy range above the giant dipole resonance (GDR) and up to the pion production threshold ( MeV) [1][2][3][4][5][6][7]. The interest in this energy region is caused by the change in the mechanism of photon-nucleus interaction occurring therein.…”

“…The data obtained from the photonuclear experiment on bremsstrahlung beams are generally represented in terms of the relative yield or the integrated reaction crosssection [2], average cross-section [3][4][5][6][7], or cross-section per equivalent photon [4,8]. The value depends on the gamma flux in the range from the reaction threshold to the end-point bremsstrahlung energy…”

Cross-sections for the ${^{27}\!\rm{al}}(γ,\textit{x})^{22}\rm{na}$ multichannel reaction with the 28.3 mev difference of the reaction thresholds

“…Nowadays, vigorous activities are taken on to investigate by experiment the nuclear photodisintegration in the energy range above the giant dipole resonance (GDR) and up to the pion production threshold (E th ≈ 145 MeV) [1,2,3,4,5,6,7]. The interest in this energy region is caused by the change in the mechanism of photon-nucleus interaction occurring there.…”

“…The data obtained from the photonuclear experiment on bremsstrahlung beams are generally represented in terms of the relative yield or the integrated reaction cross-section [2], the average cross-section σ(E γmax ) Q [3,4,5,6,7], or the cross-section per equivalent photon σ(E γmax ) Q [4,8]. The σ(E γmax ) value reflects the energy dependence of the crosssection σ(E) for the reaction under study, and is also related to the gamma flux in the range from the reaction threshold E th to the end-point bremsstrahlung energy E γmax .…”