2:30 PM - 2:45 PM
*Honoka Kurosawa1, Kenji Nanba2,3, Toshihiro Wada2, Yoshifumi Wakiyama2 (1.Major of Environmental Radioactivity, Graduate school of Symbiotic System Science and Technology, Fukushima University, 2.Institute of Environmental Radioactivity, Fukushima University, 3.Faculty of Symbiotic System Science, Fukushima University)