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Oral presentation

Oxidation of trivalent americium in nitric acid induced by multiphoton excitation via an f-f transition

Matsuda, Shohei; Yokoyama, Keiichi; Yaita, Tsuyoshi; Kobayashi, Toru; Nakashima, Nobuaki*

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We have recently realized the oxidation of trivalent americium (Am$$^{III}$$) in nitric acid by multiphoton excitation via an f-f transition. In this study, an effect of nitrate ion (NO$$_{3}$$$$^{-}$$) on the Am$$^{III}$$ photooxidation have been investigated. Our results of NO$$_{3}$$$$^{-}$$ activity dependence of the Am$$^{III}$$ photooxidation and density functional theory calculation indicate that the complex of Am$$^{III}$$ with NO$$_{3}$$$$^{-}$$, in particular one-nitrate complex, contributes to it.

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