New evaluated data on $$^{{{206,207,208}}}$$Pb photodisintegration

Photoneutron cross section measurements on 208Pb

“…It has been extensively investigated through photonuclear reactions [3,4] as well as through inelastic hadron scattering experiments [5][6][7][8]. However, there are unresolved systematic discrepancies [9] between the total and partial (γ,n) and (γ,2n) photoneutron cross sections obtained at the Saclay and Livermore positron in flight annihilation facilities: the Saclay results [3] for the (γ,abs) and (γ,n) cross sections are systematically higher than the Livermore ones [4], while Livermore (γ,2n) cross sections overestimate the Saclay ones. We note that the evaluations adopted in the 1999 and 2019 IAEA Photonuclear Data Libraries [10] follow the recommendation of Berman et al [11] of lowering the Saclay data by 7% and increasing the Livermore results by 22%, although a single renormalization factor fails to simultaneously solve the inconsistencies for both the (γ,n) and (γ,2n) channels.…”