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Report No.

Electrolytic reduction studies of Mo and W towards the reduction of seaborgium

Toyoshima, Atsushi; Asai, Masato ; Attallah, M. F.*; Goto, Naoya*; Gupta, N. S.*; Haba, Hiromitsu*; Huang, M.*; Kanaya, Jumpei*; Kaneya, Yusuke; Kasamatsu, Yoshitaka*; Kitatsuji, Yoshihiro ; Kitayama, Yuta*; Koga, Kazuki*; Komori, Yukiko*; Koyama, Takumi*; Kratz, J. V.*; Lerum, H. V.*; Miyashita, Sunao*; Oe, Kazuhiro*; Oshimi, Yoshinari*; Pershina, V.*; Sato, Daisuke*; Sato, Tetsuya  ; Shigekawa, Yudai*; Shinohara, Atsushi*; Tanaka, Akira*; Tsukada, Kazuaki ; Tsuto, Shohei*; Yokokita, Takuya*; Yokoyama, Akihiko*; Omtvedt, J. P.*; Nagame, Yuichiro; Sch$"a$del, M.

Towards electrolytic reduction of Sg, batch-wise electrolytic reduction of carrier-free $$^{93m}$$Mo and $$^{176,181}$$W radiotracers was studied using a flow electrolytic column (FEC). The electrolyzed samples from a FEC were chemically analyzed by solvent extraction with TOA and HDEHP to separate and identify reduced species from the stable Mo(VI) and W(VI) ones based on their different extraction behavior. $$^{93m}$$Mo and $$^{176, 181}$$W were applied as radiotracers. We also performed cyclic voltammetry and UV/Vis absorption spectrometry of macro amounts of Mo and W in acidic solutions to obtain information on redox reactions of these elements under given conditions. In the conference, the present status of the preparatory reduction experiments with Mo and W will be presented.



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