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Haba, Hiromitsu*; Tsukada, Kazuaki; Asai, Masato; Toyoshima, Atsushi; Akiyama, Kazuhiko; Nishinaka, Ichiro; Hirata, Masaru; Yaita, Tsuyoshi; Ichikawa, Shinichi; Nagame, Yuichiro; et al.
Journal of the American Chemical Society, 126(16), p.5219 - 5224, 2004/04
Times Cited Count:43 Percentile:72.51(Chemistry, Multidisciplinary)Fluoride complexation of element 104, rutherfordium (Rf), produced in the Cm(O,5n)Rf reaction has been studied by anion-exchange chromatography on an atom-at-a-time scale. The anion-exchangechromatographic behavior of Rf was investigated in 1.9-13.9 M hydrofluoric acid together with those of the group-4 elements Zr and Hf produced in the O-induced reactions on Ge and Gd targets, respectively. It was found that the adsorption behavior of Rf on anion-exchange resin is quite different from those of Zr and Hf, suggesting the influence of relativistic effect on the fluoride complexation of Rf.
Nagame, Yuichiro; Haba, Hiromitsu*; Tsukada, Kazuaki; Asai, Masato; Toyoshima, Atsushi; Goto, Shinichi*; Akiyama, Kazuhiko; Kaneko, Tetsuya; Sakama, Minoru*; Hirata, Masaru; et al.
Nuclear Physics A, 734, p.124 - 135, 2004/04
Times Cited Count:11 Percentile:56.88(Physics, Nuclear)no abstracts in English
Kaneko, Tetsuya*; Ono, Sawako*; Goto, Shinichi*; Haba, Hiromitsu; Asai, Masato; Tsukada, Kazuaki; Nagame, Yuichiro; Kudo, Hisaaki*
Journal of Radioanalytical and Nuclear Chemistry, 255(2), p.381 - 384, 2003/02
Times Cited Count:0 Percentile:0.01(Chemistry, Analytical)no abstracts in English
Asai, Masato; Tsukada, Kazuaki; Ichikawa, Shinichi; Sakama, Minoru*; Haba, Hiromitsu*; Nagame, Yuichiro; Nishinaka, Ichiro; Akiyama, Kazuhiko; Toyoshima, Atsushi; Kaneko, Tetsuya*; et al.
European Physical Journal A, 16(1), p.17 - 19, 2003/01
Times Cited Count:8 Percentile:50.24(Physics, Nuclear)The new isotope Bk has been identified for the first time using a gas-jet coupled on-line isotope separator at the JAERI tandem accelerator facility. Characteristic X rays and three transitions associated with the EC decay of Bk have been observed, and the half-life was determined to be 4.6 min. The half-life value and the observed -ray energies and intensities can be consistently explained as a consequence of the allowed EC transition of .
Nagame, Yuichiro; Haba, Hiromitsu; Tsukada, Kazuaki; Asai, Masato; Akiyama, Kazuhiko; Hirata, Masaru; Nishinaka, Ichiro; Ichikawa, Shinichi; Nakahara, Hiromichi; Goto, Shinichi*; et al.
Czechoslovak Journal of Physics, 53, p.A299 - A304, 2003/00
Times Cited Count:7 Percentile:46.52(Physics, Multidisciplinary)no abstracts in English
Haba, Hiromitsu; Tsukada, Kazuaki; Asai, Masato; Goto, Shinichi*; Toyoshima, Atsushi; Nishinaka, Ichiro; Akiyama, Kazuhiko; Hirata, Masaru; Ichikawa, Shinichi; Nagame, Yuichiro; et al.
Journal of Nuclear and Radiochemical Sciences, 3(1), p.143 - 146, 2002/06
We have investigated the sorption behavior of element 104 rutherfordium (Rf) on an anion exchange resin from HCl and HNO solutions. In the HCl experiments, the distribution coefficients of Rf increase with an increase of HCl concentration from 7.0 M to 11.5 M, indicating that anionic species such as [Rf(OH)Cl] or [RfCl] are formed. This sorption behavior of Rf is typical of the group-4 elements Zr and Hf, and is quite different from that of the pseudo-homologue Th. It is also noted that the distribution coefficients decrease in the order Rf, Zr, Hf at 9.0 M HCl, which is consistent with the expected order of ionic radii. On the other hand, Rf appears to behave like Zr and Hf in 8 M HNO not like Pu and Th.
Haba, Hiromitsu; Tsukada, Kazuaki; Asai, Masato; Nishinaka, Ichiro; Sakama, Minoru*; Goto, Shinichi*; Hirata, Masaru; Ichikawa, Shinichi; Nagame, Yuichiro; Kaneko, Tetsuya*; et al.
Radiochimica Acta, 89(11-12), p.733 - 736, 2002/02
Times Cited Count:14 Percentile:68.97(Chemistry, Inorganic & Nuclear)no abstracts in English
Takeda, Korehiro; Kaneko, Hiromitsu; Watanabe, Kazuyoshi; Ochiai, Kazuya
PNC TN841 84-63, 10 Pages, 1984/10
This study was started in 1982 as the part of BEFAST programme. In this year (1984), periodical measurements of the concentrations of micro-element (Fe,Ni,Cr)in the pool water continuously perform and the results were statistically compared with the results of 1983. It seems that nosignifi
Koizumi, Masumichi; *; Kaneko, Hiromitsu; Kishimoto, Yoichiro; Kanamori, Masashi; Ojima, Hisao; ; *
PNC TN842 83-05, 49 Pages, 1983/10
None
Kaneko, Hiromitsu; Yamaguchi, Toshihiro; Konashi, Kenji; Kamimura, Katsuichiro
PNC TN841 83-36, 107 Pages, 1983/06
no abstracts in English
Konashi, Kenji; Kaneko, Hiromitsu; *; *
American Nuclear Society 1983 Winter Meeting, 275 Pages, 1983/00
Konashi, Kenji; Kaneko, Hiromitsu; Nagai, Shuichiro; Tachibana, Toshimichi; Yamaguchi, Toshihiro; *
PNC TN841 82-58, 110 Pages, 1982/10
no abstracts in English
*; Kaneko, Hiromitsu; *; Yamaguchi, Toshihiro; *; *
PNC TN841 82-48, 113 Pages, 1982/09
no abstracts in English
Yamaguchi, Toshihiro; *; Kashima, Sadamitsu; Nagai, Shuichiro; Kaneko, Hiromitsu; *; Uruwashi, Shinichi*
PNC TN841 82-25, 74 Pages, 1982/03
no abstracts in English
Yato, Tadao*; Yamaguchi, Toshihiro; Nagai, Shuichiro; Kaneko, Hiromitsu
PNC TN841 82-14, 31 Pages, 1982/02
no abstracts in English
Honda, Yutaka*; Yato, Tadao*; Konashi, Kenji; *; *; Kaneko, Hiromitsu
PNC TN841 81-30, 62 Pages, 1981/03
no abstracts in English
Kaneko, Hiromitsu; *; *; *; Nagai, Shuichiro
PNC TN841 82-44, 43 Pages, 1981/02
no abstracts in English
Tachibana, Toshimichi; Kaneko, Hiromitsu; Honda, Yutaka*
PNC TN841 80-45, 118 Pages, 1980/09
no abstracts in English