Sample preparation procedure for the estimation of external exposure dose of wild animals using elecron spin resonance spectroscopy

Oka, Toshitaka   ; Takahashi, Atsushi*; Koarai, Kazuma   ; Mitsuyasu, Yusuke*; Ono, Takumi*; Tamaki, Hiroaki*; Kino, Yasushi*; Sekine, Tsutomu*; Shimizu, Yoshinaka*; Chiba, Mirei*; Suzuki, Toshihiko*; Osaka, Ken*; Sasaki, Keiichi*; Fujishima, Yohei*; Urushihara, Yusuke*; See Thing Goh, V.*; Ariyoshi, Kentaro*; Nakata, Akifumi*; Suzuki, Masatoshi*; Yamashiro, Hideaki*; Fukumoto, Manabu*; Shinoda, Hisashi*; Miura, Tomisato*

Release of the radioactive materials from Fukushima Daiichi Nuclear Power Plant accident results in a long-term low dose rate ionization exposure to wild animals. The biological effects of the wild animal do not show a clear correlation with the external dose, which is estimated from the external dose rate of the captured point of the animal, a precise external dose estimation using ESR and tooth enamel is required instead of using the external dose rate. In this work, we attempted to estimate the external dose of wild Japanese macaque and Procyon lotor captured in the high dose rate area.