2:45 PM - 3:00 PM
*Daisuke Tsumune1, Takaki Tsubono1, Kazuhiro Misumi1, Yutaka Tateda1, Michio Aoyama2, Katsumi Hirose3 (1.Central Research Institute of Electric Power Industry, 2.Institute of Environmental Radioactivity, Fukushima University, 3.Faculty of Science and Technology, Sophia University)