Development of Tc extraction techniques from Mo by (n,) reaction

Kimura, Akihiro ; Hori, Naohiko ; Tsuchiya, Kunihiko ; Ishihara, Masahiro ; Yamabayashi, Hisamichi*; Tanase, Masakazu*; Fujisaki, Saburo*; Sato, Yuichi*

Production techniques of Mo, parent nuclide of Tc, have been developed for the industrial utilization as medical diagnosis medicine after the JMTR refurbishment. The (n,) method is proposed in JMTR because of low-amount radioactive wastes and easy Tc production process. In this study, the production of the high-density MoO pellet and concentration techniques of Tc solution were developed. As the trial test, the MoO pellets with high density were produced by the SPS (Spark Plasma Sintering) method. On the other hands, it was possible to concentrate Tc solution by the solvent extraction using Methyl Ethyl Ketone (MEK). From the result, the Tc concentrating device with more than 80% concentration efficiency, was performed successfully.