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Anion-exchange behavior of element 105, Db, in HF/HNO$$_{3}$$ media

Kasamatsu, Yoshitaka; Toyoshima, Atsushi; Asai, Masato  ; Tsukada, Kazuaki  ; Haba, Hiromitsu*; Ishii, Yasuo; Tome, Hayato; Nishinaka, Ichiro; Akiyama, Kazuhiko*; Kikunaga, Hidetoshi*; Goto, Shinichi*; Ishikawa, Tsuyoshi*; Kudo, Hisaaki*; Sato, Wataru*; Oe, Kazuhiro*; Kuribayashi, Takahiro*; Shinohara, Atsushi*; Kinoshita, Norikazu*; Arai, Miwako*; Yokoyama, Akihiko*; Sakama, Minoru*; Sato, Tetsuya   ; Qin, Z.*; D$"u$llmann, Ch. E.*; Nagame, Yuichiro 

Dubnium-262 was produced in the $$^{248}$$Cm($$^{19}$$F, 5${it n}$) reaction at the JAEA tandem accelerator. Adsorption of Db on the anion-exchange resin was investigated in 0.89 M HF/0.3 M HNO$$_{3}$$ solution. The anion-exchange behavior of Nb, Ta, and Pa as homologues of Db was also examined in details in HF/HNO$$_{3}$$ solutions. From the comparison of those results, we found that the adsorption of Db on the anion-exchange resin is considerably weaker than that of Ta and is relatively similar to those of Nb and Pa in the studied conditions.

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