@article{oai:repo.qst.go.jp:00085247, author = {Nakamura, Shoji and Toh, Yosuke and Kimura, Atsushi and Yuuichi, Hatsukawa and Harada, Hideo and Yuuichi, Hatsukawa}, issue = {7}, journal = {Journal of Nuclear Science and Technology}, month = {Dec}, note = {The present study analyzes an integral experiment performed in the fast-neutron reactor ‘YAYOI’ of the University of Tokyo to validate the 129I (n,γ) cross-section. An iodine-129 sample and 15 neutron flux monitors were irradiated with fast neutrons in the Glory hole of the reactor. Capture reaction rates of 129I were obtained by measurement of gamma rays emitted through the decay of 130I, and the 15 neutron flux monitors helped validate the computed fast-neutron flux spectrum in the Glory hole. By comparing the experimental and calculated reaction rates for 129I, the present study reveals that the 129I (n,γ) cross-section of JENDL-4.0 should be reduced by 18% in the 10 keV–3 MeV energy range and supports the data by Noguere et al. below 100 keV.}, pages = {851--865}, title = {Integral experiment of 129I(n, γ) reaction using fast neutron source in the ‘YAYOI’ reactor}, volume = {59}, year = {2021} }