Medical RI production in existing reactors, 1; Ac-225 production in the core center/reflector region of the experimental fast reactor Joyo

Iwahashi, Daiki*; Sasaki, Yuto*; Maeda, Shigetaka   ; Takaki, Naoyuki*

Ac-225 is attracting attention as a radioisotope for targeted -therapy (TAT) used for the treatment of prostate cancer and the like. Therefore, we investigated a method of loading Ra-226 into the fast reactor Joyo and producing Ac-225 by transmutation. Ac-225 production can be expected by the (n,2n) reaction using fast neutrons in the center of the core and the (3n,) reaction using thermalized neutrons in the reflector region.