2:45 PM - 3:00 PM
*Seiji Hosoya1,2, Kimikazu Sasa2, Tsutomu Takahashi2, Tetsuya Matsunaka2, Masumi Matsumura2, Hongtao Shen2, Keisuke Sueki2 (1. Graduate School of Pure and Applied Sciences, University of Tsukuba, 2. Accelerator Mass Spectrometry group, University of Tsukuba)