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Radiolysis of HONTA extractant for MA/RE separation

Toigawa, Tomohiro   ; Suzuki, Hideya; Ban, Yasutoshi  ; Ishii, Sho*; Matsumura, Tatsuro  

R&D on partitioning process of the minor actinides (MA) from high level liquid waste (HLLW) were carried out for reduction of the strain on the radioactive wastes disposal. In this study, degradation amount of hexaoctyl-nitrilotriacetamide (HONTA), which is a candidate extaractant for MA/RE separation, and its products yields were obtained by using $$gamma$$-rays emitted from Co-60. Our results showed the cleavage sites in HONTA radiolysis and suggest that the mechanism for HONTA radiolysis is differ depending on the absorbed dose.

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