[1D10-13] Medical RI Production 1

[1D13] Medical RI production using domestic nuclear infrastructures for self-sustenance

(4)Experimental consideration of ⁹⁹Mo / ^99mTc production process

*Kaori Nishikata¹, Yoshitaka Fujita¹, Misaki Seki¹, Tomoaki Takeuchi¹, Hiroshi Ide¹, Kunihiko Tsuchiya¹, Naoyuki Takaki² (1. JAEA, 2. TCU)

Keywords:Mo-99, Tc-99m, recycle, MoO3, (n,γ)method

The ^99mTc is produced by transmutation of ⁹⁹Mo produced by the fission method ((n, f) method) targeting uranium. However, accidents of manufacturing facilities and transportation may hinder the medical use of RI and related research and development. Thus, it is desired to strengthen medical RI security. In this study, the applicability of ⁹⁹Mo/^99mTc production is evaluated by the activation method using a commercial light water reactor (PWR). As applicability studies, high-density MoO₃ pellets are fabricated and their characteristics are evaluated. The dissolution characteristics of the irradiation target are investigated in order to construct a process for supplying ⁹⁹Mo from the irradiated MoO₃ specimens. The preliminary test of recovering from used Mo is conducted for effective use of resources.