モデルルームとろ紙を用いたトリチウムの空気中飛散率と壁面付着率の同時測定

抄録

  Tritium dispersal rate in the air and adhesion rate on the wall from a ³H-ATP aqueous solution were simultaneously measured using a model room having six pieces of filter paper attached on the wall. A distribution of tritium on each wall was obtained from the radioactivity of each filter paper divided into 9 pieces. During an exposure time of 2 h to 24 h both dispersal and adhesion rates indicated a similar behavior. With the passage time from the purchase until 13 months both dispersal and adhesion rates linearly increased and it was found that about 0.15% per one month increased as the total rates of dispersal and adhesion.