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Development of a new continuous dissolution apparatus with a hydrophobic membrane for superheavy element chemistry

Oe, Kazuhiro*; Attallah, M. F.*; Asai, Masato  ; 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*; Oshimi, Yoshinari*; Pershina, V.*; Sato, Daisuke*; Sato, Tetsuya   ; Shigekawa, Yudai*; Shinohara, Atsushi*; Tanaka, Akira*; Toyoshima, Atsushi; Tsukada, Kazuaki  ; Tsuto, Shohei*; Yokokita, Takuya*; Yokoyama, Akihiko*; Omtvedt, J. P.*; Nagame, Yuichiro ; Sch$"a$del, M.*

A new technique for continuous dissolution of nuclear reaction products transported by a gas-jet system was developed for superheavy element (SHE) chemistry. In this technique, a hydrophobic membrane is utilized to separate an aqueous phase from the gas phase. With this technique, the dissolution efficiencies of short-lived radionuclides of $$^{91m,93m}$$Mo and $$^{176}$$W were measured. Yields of more than 80% were observed for short-lived radionuclides at aqueous-phase flow rates of 0.1-0.4 mL/s. The gas flow-rate had no influence on the dissolution efficiency within the studied flow range of 1.0-2.0 L/min. These results show that this technique is applicable for on-line chemical studies of SHEs in the liquid phase.

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Category:Chemistry, Analytical

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