https://doi.org/10.1051/epjconf/202532210004
Photonuclear reaction cross-section evaluation of 181Ta and 209Bi considering experimental double differential cross-section data
1 Department of Accelerator Science, Graduate University for Advanced Studies, Shonan Village, Hayama, Kanagawa 240-0193, Japan
2 Nuclear Data Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
3 Radiation Science Center, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
* Corresponding author: ngthuong@post.kek.jp
Published online: 14 March 2025
Experimental data of photoneutron double differential cross-sections (DDXs) on 181Ta and 209Bi for photon energies of 13 MeV and 17 MeV were incorporated into the photonuclear data evaluation using the CCONE code system and reaction cross-section data from the EXFOR database. By increasing the preequilibrium photoneutron emissions through a reduction in single-particle state density of neutron for the target nuclei within the exciton model, the evaluation results, including the reaction cross-sections and DDXs for 13 MeV photons, show good agreement with the corresponding experimental data. However, the evaluation results underestimate the experimental DDXs for 17 MeV photon energy.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
