@article{oai:repo.qst.go.jp:00084935, author = {Kwon, Saerom and Masayuki, Ota and Satoshi, Sato and Kwon, Saerom and Masayuki, Ota and Satoshi, Sato}, journal = {Annals of Nuclear Energy}, month = {May}, note = {We have identified several issues that neutron production data differed markedly among the official three kinds of9Be ENDF-6 format files in the TENDL-2017: ‘‘the TENDF file”, ‘‘special ENDF file” and ‘‘another special ENDF file”. Our detailed investigation specified; (1) different neutron production cross section above 30 MeV in the ‘‘special ENDF file”, and (2) wrong secondary neutron energy distribution data in ‘‘the TENDF file” and/or ‘‘special ENDF file”. We confirmed that TENDL-2019, the latest version of TENDL, deleted the problematic ‘‘special ENDF file” and improved some of the wrong secondary neutron energy distribution data in ‘‘the TENDF file”. A simple test calculation indicated that ‘‘another special ENDF file” seemed to be physically the best among the three TENDL-2017 ENDF files. Analyses with thick target neutron yield experiments, however, demonstrated that even ‘‘another special ENDF file” did not reproduce the experimental data, while the test calculation using a new deuteron induced library from JENDL (JENDL/DEU-2020) showed good agreement with the experimental data.}, title = {Problems on neutron production data of Be-9 in TENDL-2017 and -2019 deuteron sub-libraries}, volume = {169}, year = {2022} }