JMTRの改修・再稼動計画,7; 溶液照射法による先進的Mo製造に関する技術開発

Refurbishment and restart of JMTR, 7; Technology development on the advanced Mo production by solution irradiation method

稲葉 良知  ; 石川 幸治*; 石田 卓也; 石塚 悦男   ; Huynh, T. P.*; 蓼沼 克嘉*

Inaba, Yoshitomo; Ishikawa, Koji*; Ishida, Takuya; Ishitsuka, Etsuo; Huynh, T. P.*; Tatenuma, Katsuyoshi*

医療用放射性同位元素Tcの親核種Moの新たな製造方法である溶液照射法実現に向け、線照射下において、照射ターゲット溶液(モリブデン酸塩水溶液)と構造材料との両立性及び水溶液の化学的安定性について調べた。その結果、上記水溶液中に浸漬した構造材料の腐食が未照射の場合と比較して進行する傾向は認められず、水溶液の状態は安定であることがわかった。

The solution irradiation method is proposed as a new production technique of Mo, which is the parent nuclide of Tc used as a radiopharmaceutical. Aiming at the practical application of the new method, the compatibility between irradiation target solutions (aqueous molybdate solutions) and structural materials, and the chemical stability of the solutions were investigated under -ray irradiation. As a result, it was found that the corrosion of the structural materials immersed in the solutions does not progress in comparison with the results of the unirradiation tests and that the solutions are chemically stable.