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Chiera, N. M.*; Sato, Tetsuya; Eichler, R.*; Tomitsuka, Tomohiro; Asai, Masato; Adachi, Sadia*; Dressler, R.*; Hirose, Kentaro; Inoue, Hiroki*; Ito, Yuta; et al.
Angewandte Chemie; International Edition, 60(33), p.17871 - 17874, 2021/08
Times Cited Count:4 Percentile:22.30(Chemistry, Multidisciplinary)The formation and the chemical characterization of single atoms of dubnium (Db, element 105), in the form of its volatile oxychloride, was investigated using the on-line gas phase chromatography technique, in the temperature range 350 - 600 C. Under the exact same chemical conditions, comparative studies with the lighter homologs of group-5 in the Periodic Table clearly indicate the volatility sequence being NbOCl
TaOCl
DbOCl
. From the obtained experimental results, thermochemical data for DbOCl
were derived. The present study delivers reliable experimental information for theoretical calculations on the chemical properties of transactinides.
Chiera, N. M.; Sato, Tetsuya; Tomitsuka, Tomohiro; Asai, Masato; Ito, Yuta; Shirai, Kaori*; Suzuki, Hayato; Tokoi, Katsuyuki; Toyoshima, Atsushi; Tsukada, Kazuaki; et al.
Journal of Radioanalytical and Nuclear Chemistry, 320(3), p.633 - 642, 2019/06
Times Cited Count:2 Percentile:18.62(Chemistry, Analytical)An isothermal gas-chromatographic (IGC) device has been developed and tested for on-line gas phase studies of volatile oxychlorides of short-lived group-5 transition metals. Radioisotopes of niobium and tantalum, produced in nuclear fusion evaporation reactions, are directly flushed into the IGC setup by an inert gas-jet. Oxychloride compounds are formed by the addition of SOCl and O
. Parameters influencing the formation and transport of NbOCl
and TaOCl
are investigated. For nuclides with half-lives (
) of about 30 s, an overall efficiency of 7% is obtained, rendering the IGC setup suitable for the chemical exploration of
Db(
= 34s).
Yoshida, Yukari*; Suzuki, Yoshiyuki*; Al-Jahdari, W. S.*; Hamada, Nobuyuki*; Funayama, Tomoo; Shirai, Katsuyuki*; Kato, Hiroyuki*; Sakashita, Tetsuya; Kobayashi, Yasuhiko; Nakano, Takashi*
Journal of Radiation Research, 53(1), p.87 - 92, 2012/02
Times Cited Count:8 Percentile:40.87(Biology)Kaminuma, Takuya*; Suzuki, Yoshiyuki*; Shirai, Katsuyuki*; Mizui, Toshiyuki*; Noda, Shinei*; Yoshida, Yukari*; Funayama, Tomoo; Takahashi, Takeo*; Kobayashi, Yasuhiko; Shirao, Tomoaki*; et al.
Journal of Radiation Research, 51(6), p.627 - 631, 2010/11
Times Cited Count:9 Percentile:32.98(Biology)Suzuki, Yoshiyuki*; Yoshida, Yukari*; Shirai, Katsuyuki*; Hamada, Nobuyuki*; Mizui, Toshiyuki*; Noda, Shinei*; Funayama, Tomoo; Sakashita, Tetsuya; Kobayashi, Yasuhiko; Shirao, Tomoaki*; et al.
JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 107, 2007/02
Shirai, Katsuyuki*; Mizui, Toshiyuki*; Suzuki, Yoshiyuki*; Kobayashi, Yasuhiko; Nakano, Takashi*; Shirao, Tomoaki*
Neuroscience Letters, 399(1-2), p.57 - 60, 2006/05
Times Cited Count:23 Percentile:37.29(Neurosciences)no abstracts in English
Yoshida, Yukari*; Suzuki, Yoshiyuki*; Hamada, Nobuyuki*; Shirai, Katsuyuki*; Al-Jahdari, W. S.*; Kobayashi, Yasuhiko; Ozawa, Seiji*; Nakano, Takashi*
no journal, ,
no abstracts in English
Yoshida, Yukari*; Suzuki, Yoshiyuki*; Takeuchi, Aiko*; Hamada, Nobuyuki*; Shirai, Katsuyuki*; Funayama, Tomoo; Sakashita, Tetsuya; Kobayashi, Yasuhiko; Ozawa, Seiji*; Nakano, Takashi*
no journal, ,
no abstracts in English
Suzuki, Yoshiyuki*; Shirai, Katsuyuki*; Mizui, Toshiyuki*; Hamada, Nobuyuki*; Noda, Shinei*; Funayama, Tomoo; Yoshida, Yukari*; Kobayashi, Yasuhiko; Shirao, Tomoaki*; Nakano, Takashi*
no journal, ,
no abstracts in English
Yoshida, Yukari*; Suzuki, Yoshiyuki*; Hamada, Nobuyuki*; Shirai, Katsuyuki*; Al-Jahdari, W. S.*; Funayama, Tomoo; Sakashita, Tetsuya; Kobayashi, Yasuhiko; Ozawa, Seiji*; Nakano, Takashi*
no journal, ,
no abstracts in English
Al-Jahdari, W. S.*; Suzuki, Yoshiyuki*; Yoshida, Yukari*; Hamada, Nobuyuki*; Noda, Shinei*; Shirai, Katsuyuki*; Funayama, Tomoo; Sakashita, Tetsuya; Kobayashi, Yasuhiko; Nakano, Takashi*
no journal, ,
Sato, Tetsuya; Chiera, N. M.*; Tomitsuka, Tomohiro; Tokoi, Katsuyuki*; Suzuki, Hayato*; Ito, Yuta; Asai, Masato; Shirai, Kaori*; Inoue, Hiroki*; Adachi, Sadia*; et al.
no journal, ,
The influence of strong relativistic effects on chemical properties has been interesting in the superheavy element region. Their chemical properties, however, have not been investigated sufficiently because of experimental difficulties owing to their low production rates and short half-lives. In order to elucidate the chemical properties of dubnium (Db, Z = 105), we have conducted on-line isothermal gas chromatographic experiments of oxychloride of group-5 elements. We confirmed the formation of volatile oxychlorides of Db and its lighter homologs Nb and Ta by using Db (half-life,
= 33.8 s),
Nb (
= 14.5 min.), and
Ta (
= 6.76 min.), respectively. We successfully determined the adsorption enthalpies of the oxychlorides of each element on the quartz surface from their isothermal gas chromatographic behavior. The obtained volatility sequence of the group-5 elements is found to be Nb
Ta
Db.
Al-Jahdari, W. S.*; Suzuki, Yoshiyuki*; Yoshida, Yukari*; Hamada, Nobuyuki*; Noda, Shinei*; Shirai, Katsuyuki*; Funayama, Tomoo; Sakashita, Tetsuya; Sakurai, Hideyuki*; Kobayashi, Yasuhiko; et al.
no journal, ,
Shirai, Katsuyuki*; Suzuki, Yoshiyuki*; Mizui, Toshiyuki*; Hamada, Nobuyuki*; Noda, Shinei*; Funayama, Tomoo; Yoshida, Yukari*; Kobayashi, Yasuhiko; Shirao, Tomoaki*; Nakano, Takashi*
no journal, ,
no abstracts in English
Yoshida, Yukari*; Suzuki, Yoshiyuki*; Hamada, Nobuyuki*; Shirai, Katsuyuki*; Noda, Shinei*; Al-Jahdari, W. S.*; Funayama, Tomoo; Sakashita, Tetsuya; Wada, Seiichi*; Kobayashi, Yasuhiko; et al.
no journal, ,
no abstracts in English
Suzuki, Yoshiyuki*; Shirai, Katsuyuki*; Mizui, Toshiyuki*; Hamada, Nobuyuki*; Noda, Shinei*; Funayama, Tomoo; Yoshida, Yukari*; Kobayashi, Yasuhiko; Shirao, Tomoaki*; Nakano, Takashi*
no journal, ,
no abstracts in English
Suzuki, Yoshiyuki*; Shirai, Katsuyuki*; Yoshida, Yukari*; Mizui, Toshiyuki*; Kiyohara, Hiroki*; Noda, Shinei*; Ishizaki, Yasuki*; Ozawa, Seiji*; Nakano, Takashi*; Hamada, Nobuyuki*; et al.
no journal, ,
no abstracts in English