Radiation effect on solvent extraction of minor actinide

マイナーアクチノイドの溶媒抽出に及ぼす放射線の効果

須郷 由美; 田口 光正; 佐々木 祐二  ; 森田 泰治  ; 石岡 典子

Sugo, Yumi; Taguchi, Mitsumasa; Sasaki, Yuji; Morita, Yasuji; Ishioka, Noriko

Radiation effect on the extraction of Am was investigated using the solution of -tetraoctyldiglycolamide (TODGA) pre-irradiated with -particles and -rays. Am was extracted almost quantitatively from the aqueous phase into the organic one. The concentration in the organic phase nearly kept constant even after irradiation with both - and -rays up to 200 kGy. The absorbed dose had been estimated to be approximately 5 kGy per cycle in the actual process. Consequently, it is suggested that the extractability of TODGA for minor actinides can be maintained after recycling on the order of dozens of cycles in the process.