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11 results on '"Kaneya, Yusuke"'

2. In situ synthesis of volatile carbonyl complexes with short-lived nuclides

Author

Even, Julia, Ackermann, Dieter, Asai, Masato, Block, Michael, Brand, Holger, Di Nitto, Antonio, Düllmann, Christoph E., Eichler, Robert, Fan, Fangli, Haba, Hiromitsu, Hartmann, Willi, Hübner, Annett, Heßberger, Fritz P., Huang, Minqhiu, Jäger, Egon, Kaji, Daiya, Kanaya, Jumpei, Kaneya, Yusuke, Khuyagbaatar, Jadambaa, Kindler, Birgit, Kratz, Jens V., Krier, Jörg, Kudou, Yuki, Kurz, Nikolaus, Laatiaoui, Mustapha, Lommel, Bettina, Maurer, Joachim, Miyashita, Sunao, Morimoto, Kouji, Morita, Kosuke, Murakami, Masashi, Nagame, Yuichiro, Nitsche, Heino, Ooe, Kazuhiro, Qin, Zhi, Sato, Tetsuya K., Schädel, Matthias, Steiner, Jutta, Sumita, Takayuki, Takeyama, Mirei, Tanaka, Kengo, Toyoshima, Atsushi, Tsukada, Kazuaki, Türler, Andreas, Usoltsev, Ilya, Wakabayashi, Yasuo, Wang, Yang, Wiehl, Norbert, Yakushev, Alexander, and Yamaki, Sayaka

Published
2015
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3. First ionization potential of the heaviest actinide lawrencium, element 103

Author

Sato Tetsuya K., Asai Masato, Borschevsky Anastasia, Stora Thierry, Sato Nozomi, Kaneya Yusuke, Tsukada Kazuaki, Düllmann Christoph E., Eberhardt Klaus, Eliav Ephraim, Ichikawa Shinichi, Kaldor Uzi, Kratz Jens V., Miyashita Sunao, Nagame Yuichiro, Ooe Kazuhiro, Osa Akihiko, Renisch Dennis, Runke Jörg, Schädel Matthias, Thörle-Pospiech Petra, Toyoshima Atsushi, and Trautmann Norbert

Subjects
Physics, QC1-999
Abstract

The first ionization potential (IP1) of element 103, lawrencium (Lr), has been successfully determined for the first time by using a newly developed method based on a surface ionization process. The measured IP1 value is 4.9630.080.07 eV. This value is the smallest among those of actinide elements and is in excellent agreement with the value of 4.963(15) eV predicted by state-of-the-art relativistic calculations also performed in this work. Our results strongly support that the Lr atom has an electronic configuration of [Rn]7s25f147p11/2, which is influenced by strong relativistic effects. The present work provides a reliable benchmark for theoretical calculations and also opens the way for studies on atomic properties of heavy elements with atomic number Z > 100. Moreover, the present achievement has triggered a controversy on the position of lutetium (Lu) and Lr in the Periodic Table of Elements.

Published
2016
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4. First Ionization Potentials of Fm, Md, No, and Lr: Verification of Filling-Up of 5f Electrons and Confirmation of the Actinide Series

Author

Sato, Tetsuya K., primary, Asai, Masato, additional, Borschevsky, Anastasia, additional, Beerwerth, Randolf, additional, Kaneya, Yusuke, additional, Makii, Hiroyuki, additional, Mitsukai, Akina, additional, Nagame, Yuichiro, additional, Osa, Akihiko, additional, Toyoshima, Atsushi, additional, Tsukada, Kazuaki, additional, Sakama, Minoru, additional, Takeda, Shinsaku, additional, Ooe, Kazuhiro, additional, Sato, Daisuke, additional, Shigekawa, Yudai, additional, Ichikawa, Shin-ichi, additional, Düllmann, Christoph E., additional, Grund, Jessica, additional, Renisch, Dennis, additional, Kratz, Jens V., additional, Schädel, Matthias, additional, Eliav, Ephraim, additional, Kaldor, Uzi, additional, Fritzsche, Stephan, additional, and Stora, Thierry, additional

Published
2018
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5. Vacuum Chromatography of Tl on SiO 2 at the Single-Atom Level

Author

Dressler, Rugard, Vascon, Alessio, Asai, Masato, Türler, Andreas, Toyoshima, Atsushi, Mitsukai, Akina, Schädel, Matthias, Kaneya, Yusuke, Tsukada, Kazuaki, Piguet, Dave, Sato, Tetsuya K., Steinegger, Patrick, Eichler, Robert, Takeda, Shinsaku, and Nagame, Yuichiro

Subjects
540 Chemistry, 570 Life sciences, biology
Abstract

An isothermal vacuum chromatography setup for superheavy element chemistry studies was developed and tested online at the one-atom-at-a-time level. As a model system, the adsorption behavior of thallium on quartz was chosen with respect to a future chemical characterization of its superheavy homologue, element 113 (E113, Z = 113), using the described setup. Short-lived 184Tl (t1/2 = 10.1(5) s) was produced in the reaction 152Gd(35Cl, 3n)184Tl and delivered as a mass-separated ion beam to the chemistry experiment: A subsurface implantation and a subsequent fast thermal release from a metal matrix was followed by isothermal vacuum chromatography as the chemical separation stage. Single atomic species passing this chromatographic separation were finally identified by time- and energy-resolved event-by-event α-spectroscopy using a diamond-based solid-state detector. The derived adsorption enthalpy of −ΔHadsSiO2(Tl) = 158 ± 3 kJ·mol–1 significantly exceeds available data but correlates well with the adsorption of other elements studied on the same surface. The described technique enables chemical experiments with short-lived transactinide elements (t1/2 < 1 s), surpassing the rapidity of today’s state-of-the-art gas-phase experiments by at least 1 order of magnitude.

Published
2016
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6. Vacuum Chromatography of Tl on SiO2 at the Single-Atom Level

Author

Steinegger, Patrick, primary, Asai, Masato, additional, Dressler, Rugard, additional, Eichler, Robert, additional, Kaneya, Yusuke, additional, Mitsukai, Akina, additional, Nagame, Yuichiro, additional, Piguet, Dave, additional, Sato, Tetsuya K., additional, Schädel, Matthias, additional, Takeda, Shinsaku, additional, Toyoshima, Atsushi, additional, Tsukada, Kazuaki, additional, Türler, Andreas, additional, and Vascon, Alessio, additional

Published
2016
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7. Extraction behavior of Mo and W from H2SO4 and HF/HCl solutions into toluene with Aliquat336: sulfate and fluoride complex formation of Mo and W towards chemical studies of seaborgium (Sg).

Author

Toyoshima, Atsushi, Mitsukai, Akina, Tsukada, Kazuaki, Ooe, Kazuhiro, Haba, Hiromitsu, Komori, Yukiko, Murakami, Masashi, Kaneya, Yusuke, Sato, Daisuke, Asai, Masato, Sato, Tetsuya K., and Nagame, Yuichiro

Subjects
MOLYBDENUM, HYDROCHLORIC acid, TUNGSTEN, SEABORGIUM, FLUORIDES
Abstract

We have studied extraction behavior of group-6 elements Mo and W to search for suitable conditions for an on-line extraction experiment of their heavier homolog, seaborgium (Sg). Batch-wise extraction of carrier-free radiotracers 93mMo and 177,179,181W were carried out from 0.10 - 8.6 M H2SO4 and 1.0 × 10−4 − 5.0 M HF/1.0 M HCl into toluene with a quaternary ammonium compound, Aliquat336. Anionic sulfate complexes of Mo and W with charge − 2 were extracted with Aliquat336 from H2SO4 solutions with concentrations of [H2SO4] > 2 M. In HF/1.0 M HCl, oxyfluoro complexes of Mo and W with charge − 1 were interpreted to be formed and extracted with Aliquat336. From these results, favorable conditions for the extraction of Sg are discussed. [ABSTRACT FROM AUTHOR]

Published
2018
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8. In situ synthesis of volatile carbonyl complexes with short-lived nuclides

Author

Even, Julia, primary, Ackermann, Dieter, additional, Asai, Masato, additional, Block, Michael, additional, Brand, Holger, additional, Di Nitto, Antonio, additional, Düllmann, Christoph E., additional, Eichler, Robert, additional, Fan, Fangli, additional, Haba, Hiromitsu, additional, Hartmann, Willi, additional, Hübner, Annett, additional, Heßberger, Fritz P., additional, Huang, Minqhiu, additional, Jäger, Egon, additional, Kaji, Daiya, additional, Kanaya, Jumpei, additional, Kaneya, Yusuke, additional, Khuyagbaatar, Jadambaa, additional, Kindler, Birgit, additional, Kratz, Jens V., additional, Krier, Jörg, additional, Kudou, Yuki, additional, Kurz, Nikolaus, additional, Laatiaoui, Mustapha, additional, Lommel, Bettina, additional, Maurer, Joachim, additional, Miyashita, Sunao, additional, Morimoto, Kouji, additional, Morita, Kosuke, additional, Murakami, Masashi, additional, Nagame, Yuichiro, additional, Nitsche, Heino, additional, Ooe, Kazuhiro, additional, Qin, Zhi, additional, Sato, Tetsuya K., additional, Schädel, Matthias, additional, Steiner, Jutta, additional, Sumita, Takayuki, additional, Takeyama, Mirei, additional, Tanaka, Kengo, additional, Toyoshima, Atsushi, additional, Tsukada, Kazuaki, additional, Türler, Andreas, additional, Usoltsev, Ilya, additional, Wakabayashi, Yasuo, additional, Wang, Yang, additional, Wiehl, Norbert, additional, Yakushev, Alexander, additional, and Yamaki, Sayaka, additional

Published
2014
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9. Measurement of the Md3+/Md2+ Reduction Potential Studied with Flow Electrolytic Chromatography

Author

Toyoshima, Atsushi, primary, Li, Zijie, additional, Asai, Masato, additional, Sato, Nozomi, additional, Sato, Tetsuya K., additional, Kikuchi, Takahiro, additional, Kaneya, Yusuke, additional, Kitatsuji, Yoshihiro, additional, Tsukada, Kazuaki, additional, Nagame, Yuichiro, additional, Schädel, Matthias, additional, Ooe, Kazuhiro, additional, Kasamatsu, Yoshitaka, additional, Shinohara, Atsushi, additional, Haba, Hiromitsu, additional, and Even, Julia, additional

Published
2013
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10. First successful ionization of Lr (Z = 103) by a surface-ionization technique

Author

Sato, Tetsuya K., primary, Sato, Nozomi, additional, Asai, Masato, additional, Tsukada, Kazuaki, additional, Toyoshima, Atsushi, additional, Ooe, Kazuhiro, additional, Miyashita, Sunao, additional, Schädel, Matthias, additional, Kaneya, Yusuke, additional, Nagame, Yuichiro, additional, Osa, Akihiko, additional, Ichikawa, Shin-ichi, additional, Stora, Thierry, additional, and Kratz, Jens Volker, additional

Published
2013
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11. Vacuum Chromatography of Tl on SiO2at the Single-Atom Level

Author

Steinegger, Patrick, Asai, Masato, Dressler, Rugard, Eichler, Robert, Kaneya, Yusuke, Mitsukai, Akina, Nagame, Yuichiro, Piguet, Dave, Sato, Tetsuya K., Schädel, Matthias, Takeda, Shinsaku, Toyoshima, Atsushi, Tsukada, Kazuaki, Türler, Andreas, and Vascon, Alessio

Abstract

An isothermal vacuum chromatography setup for superheavy element chemistry studies was developed and tested online at the one-atom-at-a-time level. As a model system, the adsorption behavior of thallium on quartz was chosen with respect to a future chemical characterization of its superheavy homologue, element 113 (E113, Z= 113), using the described setup. Short-lived 184Tl (t1/2= 10.1(5) s) was produced in the reaction 152Gd(35Cl, 3n)184Tl and delivered as a mass-separated ion beam to the chemistry experiment: A subsurface implantation and a subsequent fast thermal release from a metal matrix was followed by isothermal vacuum chromatography as the chemical separation stage. Single atomic species passing this chromatographic separation were finally identified by time- and energy-resolved event-by-event α-spectroscopy using a diamond-based solid-state detector. The derived adsorption enthalpy of −ΔHadsSiO2(Tl) = 158 ± 3 kJ·mol–1significantly exceeds available data but correlates well with the adsorption of other elements studied on the same surface. The described technique enables chemical experiments with short-lived transactinide elements (t1/2< 1 s), surpassing the rapidity of today’s state-of-the-art gas-phase experiments by at least 1 order of magnitude.

Published
2016
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