[3D01-05] Environmental Radioacitivty and Natural Radiation

[3D03] Behavior of radium in Ningyo-toge Environmental Engineering Center

*Yuichi Kurihara¹, Akiko Yamaguchi², Shogo Higaki², Yoshiyuki Ohara¹, Yoshio Takahashi² (1. JAEA, 2. Univ. of Tokyo)

Keywords:radium, Ningyo-toge, clay mineral

In order to investigate the behavior of radium in the Ningyo-toge Environmental Engineering Center, radium in two boring core samples in the center was analyzed with HPGe semiconductor detector. As a result, concentrate of radium was observed in the layer containing clay mineral of the two core samples.