Fri. May 31, 2024 3:30 PM - 4:45 PM
201A (International Conference Hall, Makuhari Messe)
convener:Yasuhito Igarashi(Institute for Integrated Radiation and Nuclear Science, Kyoto University), Satoru Endo(Graduate School of Advanced Science and Engineering, Hiroshima University), Sumi Yokoyama(Nagasaki University), Hirohiko Ishikawa(Institute for Integrated Radiation and Nuclear Science, Kyoto University), Chairperson:Hirohiko Ishikawa(Institute for Integrated Radiation and Nuclear Science, Kyoto University), Akiyo Yatagai(Hirosaki University), TAKAMIYA Koichi(Institute for Integrated Radiation and Nuclear Science, Kyoto University)
The social debate on the extent of the area of deposition of radioactive fallout from the 1945 atomic bombings of Hiroshima and Nagasaki, the so-called "Black Rain" area, has been continuing. In this session, we will present an overview of the research study that has been conducted since January 2021 toward more accurate estimation of the area, as well as the results obtained. This research has been conducted in two main parts: (1) construction and calculation of simulation models, and (2) measurement of radioactive and trace materials, which is mainly soil survey to obtain the validation data.