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15 Result(s)

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  1. No Access

    Article

    Development of a He/CdI2 gas-jet system coupled to a surface-ionization type ion-source in JAEA-ISOL: towards determination of the first ionization potential of Lr (Z = 103)

    We report on development of a gas-jet transport system coupled to a surface ionization ion-source in the JAEA-ISOL (Isotope Separator On-Line) system. As a new aerosol material for the gas-jet system, CdI2, which...

    T. K. Sato, M. Asai, N. Sato, K. Tsukada… in Journal of Radioanalytical and Nuclear Che… (2015)

  2. No Access

    Article

    Electron Holographic Nano-Characterization of Gold Catalyst at Interface

    The catalytic properties of nanostructured gold catalyst are known to depend on the size of the gold particles and to be activated when the size decreases to a few nanometers. We investigated the size dependen...

    S. Ichikawa, T. Akita, M. Okumura, M. Haruta, K. Tanaka in MRS Online Proceedings Library (2011)

  3. No Access

    Article

    Nanoscale characterization of Pd/TiO2 catalysts and Ag/TiO2 catalysts by electron holography

    Catalytic properties of noble metal catalysts are often caused by their nanostructures and the interaction between nano particles and oxides supports. We examine the mean inner potential of Pd particles in Pd/TiO

    S. Ichikawa, T. Akita, K. Okazaki, K. Tanaka, M. Kohyama in MRS Online Proceedings Library (2005)

  4. No Access

    Article

    Electron Holographic Characterization of Nano-Hetero Interface Effect in Gold Catalysts

    We investigated the atomic structure near the interface and the size dependence of the mean inner potential of gold in Au/TiO2 catalysts prepared by the deposition precipitation (DP) method and the vacuum evapora...

    S. Ichikawa, T. Akita, K. Okazaki, K. Tanaka, M. Kohyama in MRS Online Proceedings Library (2004)

  5. No Access

    Article

    Mean Inner Potential of Nanostructured Noble Metal Catalysts - Pt/TiO2 Catalyst -

    Catalytic properties of noble metal catalysts are often caused by their nanostructures. Gold catalysts are typical cases. It is especially interesting that the catalytic property of gold suddenly changes to re...

    S. Ichikawa, T. Akita, K. Okazaki, M. Okumura, K. Tanaka… in MRS Online Proceedings Library (2004)

  6. No Access

    Article

    Analytical TEM Observations of Combinatorial Catalyst Libraries for Hydrogen Production–As a Part of “MATERIOMICS”-

    Materiomics is a new approach combining combinatorial surveys and precise structure analyses in order to develop new functional materials efficiently. In this paper, we show the first stage of materiomics applied...

    T. Akita, A. Ueda, Y. Yamada, S. Ichikawa, K. Tanaka… in MRS Online Proceedings Library (2003)

  7. No Access

    Article

    Anion exchange behavior of nobelium

    The anion exchange behavior of 255No produced by the 248Cm(12C,5n) reaction has been investigated in 11.5M HCl, 4M HCl and 8M HNO3 to deduce the behavior of 'primordial 257No' produced via 248Cm(18O,5n)261Rf →α 2...

    A. Toyoshima, K. Tsukada, H. Haba, M. Asai… in Journal of Radioanalytical and Nuclear Che… (2003)

  8. No Access

    Article

    Chemical separation of the unknown isotope 252Bk

    Rapid chemical separation of berkelium is essential in order to measure the unknown isotope 252Bk. An anion exchange system of mineral acid and methanol was examined. An elution curve of Bk was obtained using 250

    T. Maruyama, D. Kaji, T. Kaneko, S. Goto… in Journal of Radioanalytical and Nuclear Che… (2003)

  9. No Access

    Article

    Characteristics of the asymmetric mass distribution in proton-induced fission of actinides

    To study the correlation between fragment mass distributions and shell structures of fission fragments, fragment mass and energy distributions in proton-induced fission of 232Th and uranium isotopes, 233,235,238U...

    S. Goto, D. Kaji, I. Nishinaka, Y. Nagame… in Journal of Radioanalytical and Nuclear Che… (2003)

  10. No Access

    Article

    Atomic and Electronic Structures of Nano-Interface In Au/TiO2 Catalyst - Electron Microscopic Approach -

    The size dependence of the catalytic property of the gold catalysts has been reported. It is especially interesting that the catalytic property of gold suddenly changes to show a platinum-like behavior when th...

    S. Ichikawa, K. Okazaki, T. Akita, M. Okumura, K. Tanaka… in MRS Online Proceedings Library (2002)

  11. No Access

    Article

    Two deformation paths in fission of light actinides

    The correlation among the fission threshold energy, the scission configuration and the mass yield distribution has been studied in proton-induced fission of light actinides. It was found that there exist at le...

    Y. Nagame, I. Nishinaka, Y. L. Zhao… in Journal of Radioanalytical and Nuclear Che… (1999)

  12. No Access

    Article

    Recent studies of unstable nuclei far from stability with the on-line isotope separators of JAERI

    Studies on the decay of unstable nuclei using the two on-line isotope separators of JAERI are reviewed for the past five years. With the previously established ion-source technique using mono-oxide ion formati...

    T. Sekine, S. Ichikawa, A. Osa, M. Koizumi… in Journal of Radioanalytical and Nuclear Che… (1999)

  13. No Access

    Article

    Characteristcs of binary scission configurations in proton-induced fission of actinides

    Two kinds of scission configurations for certain mass division have been verified by the accurate measurements of fragment velocities in protoninduced fission of actinides: compact and elongated scission confi...

    Y. L. Zhao, T. Ohtsuki, Y. Nishinaka… in Journal of Radioanalytical and Nuclear Che… (1999)

  14. No Access

    Article

    Rapid anion exchange separation of fermium with mineral acid-methyl alcohol mixed media

    Anion exchange separation of250Fm (30 m) synthesized by the12C+242Pu and16O+238U reactions has been investigated with mineral acid-methyl alcohol mixed media at elevated temperature. Fermium was chromatographical...

    S. Usuda, N. Shinohara, H. Yoshikawa… in Journal of Radioanalytical and Nuclear Che… (1987)

  15. No Access

    Chapter

    Synthesis of Transuranium Nuclides from Interaction of 160 with 238U

    Many studies of actinides, especially of transuranium elements, have been performed mainly owing to scientists’ endeavors to discover new elements and nuclides. (1) In spite of these efforts, the mechanism of the...

    N. Shinohara, S. Ichikawa, S. Usuda… in Americium and Curium Chemistry and Technol… (1985)