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Journal Articles

Magnetism induced by interlayer electrons in the quasi-two-dimensional electride Y$$_{2}$$C; Inelastic neutron scattering study

Tamatsukuri, Hiromu; Murakami, Yoichi*; Kuramoto, Yoshio*; Sagayama, Hajime*; Matsuura, Masato*; Kawakita, Yukinobu; Matsuishi, Satoru*; Washio, Yasuhito*; Inoshita, Takeshi*; Hamada, Noriaki*; et al.

Physical Review B, 102(22), p.224406_1 - 224406_5, 2020/12

 Times Cited Count:8 Percentile:49.94(Materials Science, Multidisciplinary)

Journal Articles

Development of computational method for predicting vortex cavitation in the reactor vessel of JSFR

Hamada, Noriaki*; Shiina, Koji*; Fujimata, Kazuhiro*; Hayakawa, Satoshi*; Watanabe, Osamu*; Yamano, Hidemasa

Proceedings of International Conference on Fast Reactors and Related Fuel Cycles (FR 2009) (CD-ROM), 10 Pages, 2012/00

In a sodium-cooled fast reactor, a vortex cavitation evaluation methodology was developed to predict a possible cavitation generated by vortex at the center of accelerating flow. This methodology was applied to a scaled model experiment, leading to the prospect that the cavitation can be predicted.

Journal Articles

First-principles calculations for anisotropy of iron-based superconductors

Nakamura, Hiroki; Machida, Masahiko; Koyama, Tomio*; Hamada, Noriaki*

Physica C, 470(20), p.1066 - 1069, 2010/11

 Times Cited Count:2 Percentile:12.17(Physics, Applied)

Journal Articles

First-principles study for the anisotropy of iron-based superconductors toward power and device applications

Nakamura, Hiroki; Machida, Masahiko; Koyama, Tomio*; Hamada, Noriaki*

Journal of the Physical Society of Japan, 78(12), p.123712_1 - 123712_4, 2009/12

 Times Cited Count:39 Percentile:82.82(Physics, Multidisciplinary)

Journal Articles

Targeted heavy-ion microbeam irradiation of the embryo but not yolk in the diapause-terminated egg of the silkworm, ${it Bombyx mori}$, induces the somatic mutation

Furusawa, Toshiharu*; Fukamoto, Kana*; Sakashita, Tetsuya; Suzuki, Eiko*; Kakizaki, Takehiko*; Hamada, Nobuyuki*; Funayama, Tomoo; Suzuki, Hiromi*; Ishioka, Noriaki*; Wada, Seiichi*; et al.

Journal of Radiation Research, 50(4), p.371 - 375, 2009/07

 Times Cited Count:8 Percentile:32.13(Biology)

Using heavy-ion microbeam, we report target irradiation of selected compartments within the diapause-terminated egg and its mutational consequences in the silkworm, ${it Bombyx mori}$. On one hand, carbon-ion exposure of embryo to 0.5 - 6 Gy increased the somatic mutation frequency, suggesting targeted radiation effects. On the other, such increases were not observed when yolk was targeted, suggesting a lack of nontargeted bystander effect.

Journal Articles

Influence of local irradiation with heavy-ion microbeam on the incidence of somatic mutation arising on the larvae in embryo and yolk in the egg of the silkworm, ${it Bombyx mori}$

Furusawa, Toshiharu*; Suzuki, Eiko*; Nagaoka, Shunji*; Suzuki, Hiromi*; Ishioka, Noriaki*; Hamada, Nobuyuki*; Wada, Seiichi*; Kobayashi, Yasuhiko; Sakashita, Tetsuya; Kakizaki, Takehiko*; et al.

JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 115, 2008/03

Using heavy ion microbeam, we investigated the somatic mutation arising on the larvae in embyro and yolk in the egg of silkworm, ${it Bombyx mori}$. The incidence of the somatic mutation was 12%, and the same level of mutation following the microbeam irradiation at the center of the egg. However, the microbeam irradiation to the abdomen of the silkworm larvae induced the increase of somatic mutation, 63% (3 Gy) and 80% (6 Gy).

Journal Articles

Analysis of local irradiation of heavy-ion microbeam influence on embryo or yolk in the silkworm, ${it Bombyx mori}$, egg by the incidence of somatic mutation appearing in the larvae

Furusawa, Toshiharu*; Suzuki, Eiko*; Nagaoka, Shunji*; Suzuki, Hiromi*; Ishioka, Noriaki*; Hamada, Nobuyuki*; Wada, Seiichi*; Kobayashi, Yasuhiko; Sakashita, Tetsuya; Kakizaki, Takehiko; et al.

JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 118, 2007/02

no abstracts in English

Journal Articles

Band structures of Wurtzite InN and Ga$$_{1-x}$$In$$_x$$N by all-electron $$GW$$ calculation

Usuda, Manabu; Hamada, Noriaki*; Shiraishi, Kenji*; Oshiyama, Atsushi*

Japanese Journal of Applied Physics, Part 2, 43(3B), p.L407 - L410, 2004/03

 Times Cited Count:31 Percentile:72.05(Physics, Applied)

We report first-principles electronic band-structure calculations of InN by using the all-electron full-potential linearized augmented-plane-wave (FLAPW) method in the $$GW$$ approximation (GWA), and provide the reliable theoretical bandgap of InN. Our calculation suggests that InN is a narrow-gap semiconductor and strongly supports the recently reported smaller bandgaps.

Journal Articles

Bandgaps of Ga$$_{1-x}$$In$$_x$$N by all-electron GWA calculation

Usuda, Manabu; Hamada, Noriaki*; Shiraishi, Kenji*; Oshiyama, Atsushi*

Physica Status Solidi (C), 0(7), p.2733 - 2736, 2003/12

 Times Cited Count:2 Percentile:68.38

The electronic band-structures of wurtzite-type Ga$$_{1-x}$$In$$_x$$N are calculated by using an all-electron FLAPW method in the $$GW$$ approximation(GWA). Our calculations show that the bandgap of InN is smaller than 1 eV, and strongly support the recently observed smaller bandgaps.

Journal Articles

Charge-ordered state in single-crystalline CaFeO$$_{3}$$ thin film studied by X-ray anomalous diffraction

Akao, Tadahiro*; Azuma, Yusuke; Usuda, Manabu; Nishihata, Yasuo; Mizuki, Junichiro; Hamada, Noriaki*; Hayashi, Naoaki*; Terashima, Takahito*; Takano, Mikio*

Physical Review Letters, 91(15), p.156405_1 - 156405_4, 2003/10

 Times Cited Count:34 Percentile:79.64(Physics, Multidisciplinary)

X-ray anomalous diffraction, together with a band structure calculation, was employed to obtain a quantitative comprehension of the charge-ordering state in a single-crystalline CaFeO$$_{3}$$ thin film. The experimental results show a characteristic energy dispersion of the near inhibited reflection at 150, implying Fe atoms split into two distinct states. The energy dispersion is in good agreement with the calculated spectrum based on LDA+U scheme. The calculation reveals an electronic configuration of the Fe 3d orbital follows a localization in the oxygen orbital surrounds one of the distinct Fe atoms.

Journal Articles

Self-regeneration of a Pd-perovskite catalyst for automotive emissions control

Nishihata, Yasuo; Mizuki, Junichiro; Akao, Takahiro; Tanaka, Hirohisa*; Uenishi, Mari*; Kimura, Mareo*; Okamoto, Tokuhiko*; Hamada, Noriaki*

Nature, 418(6894), p.164 - 167, 2002/07

 Times Cited Count:925 Percentile:99.82(Multidisciplinary Sciences)

no abstracts in English

Journal Articles

ELECTRONIC STRUCTURE AND FERMI SURFACE OF FERROMAGNET UGE2 BY RELATIVISTIC SPIN-POLARIZED LINEARIZED APW METHOD

Tejima, Shogo; Hamada, Noriaki*

Journal of the Physical Society of Japan, 0 Pages, 2002/00

None

JAEA Reports

A Study on the properties off- and d- electron compounds using band calculation method

Hamada, Noriaki*; Yamagami, Hiroshi*; Tejima, Shogo

JNC TY8400 2001-001, 55 Pages, 2001/03

JNC-TY8400-2001-001.pdf:1.2MB

no abstracts in English

Oral presentation

Effects of localized heavy ions irradiation on somatic mutation of larvae of the silkworm, ${it Bombyx mori}$, hatched from diapause eggs

Furusawa, Toshiharu*; Suzuki, Eiko*; Nagaoka, Shunji*; Suzuki, Hiromi*; Ishioka, Noriaki*; Hamada, Nobuyuki*; Wada, Seiichi*; Kobayashi, Yasuhiko; Sakashita, Tetsuya; Kakizaki, Takehiko; et al.

no journal, , 

no abstracts in English

Oral presentation

Development of computational method for predicting vortex cavitation in the reactor vessel of JSFR

Hamada, Noriaki*; Fujimata, Kazuhiro*; Shiina, Koji*; Hayakawa, Satoshi*; Watanabe, Osamu*; Yamano, Hidemasa

no journal, , 

A computational method for predicting vortex cavitation based on the theory of vortex streching was developed to predict possible cavitation generated by vortex at the center of accelerating swirl flow in the reactor vessel in a sodium-cooled fast reactor. This method was applied to a scale model test of a commercial fast reactor, leading to feasibility of this method that can predict the cavitation.

Oral presentation

Anionic electron-induced magnetism in a two dimensional electride Y$$_{2}$$C

Tamatsukuri, Hiromu; Murakami, Yoichi*; Kuramoto, Yoshio*; Sagayama, Hajime*; Matsuura, Masato*; Kawakita, Yukinobu; Matsuishi, Satoru*; Washio, Yasuhito*; Inoshita, Takeshi*; Hamada, Noriaki*; et al.

no journal, , 

no abstracts in English

16 (Records 1-16 displayed on this page)
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