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Journal Articles

Neutron emission spectrum from gold excited with 16.6 MeV linearly polarized monoenergetic photons

Kirihara, Yoichi; Nakashima, Hiroshi; Sanami, Toshiya*; Namito, Yoshihito*; Itoga, Toshiro*; Miyamoto, Shuji*; Takemoto, Akinori*; Yamaguchi, Masashi*; Asano, Yoshihiro*

Journal of Nuclear Science and Technology, 57(4), p.444 - 456, 2020/04

 Times Cited Count:1 Percentile:68.44(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Evidence for momentum-dependent heavy fermionic electronic structures; Soft X-ray ARPES for the superconductor CeNi$$_{2}$$Ge$$_{2}$$ in the normal state

Nakatani, Yasuhiro*; Aratani, Hidekazu*; Fujiwara, Hidenori*; Mori, Takeo*; Tsuruta, Atsushi*; Tachibana, Shoichi*; Yamaguchi, Takashi*; Kiss, Takayuki*; Yamasaki, Atsushi*; Yasui, Akira*; et al.

Physical Review B, 97(11), p.115160_1 - 115160_7, 2018/03

AA2018-0003.pdf:1.65MB

 Times Cited Count:1 Percentile:90.33(Materials Science, Multidisciplinary)

Journal Articles

Three-dimensional electronic structures and the metal-insulator transition in Ruddlesden-Popper iridates

Yamasaki, Atsushi*; Fujiwara, Hidenori*; Tachibana, Shoichi*; Iwasaki, Daisuke*; Higashino, Yuji*; Yoshimi, Chiaki*; Nakagawa, Koya*; Nakatani, Yasuhiro*; Yamagami, Kohei*; Aratani, Hidekazu*; et al.

Physical Review B, 94(11), p.115103_1 - 115103_10, 2016/11

AA2016-0587.pdf:2.55MB

 Times Cited Count:12 Percentile:37.04(Materials Science, Multidisciplinary)

In this study, we systematically investigate three-dimensional(3D) momentum-resolved electronic structures of Ruddlesden-Popper-type iridium oxides Sr$$_{n+1}$$Ir$$_{n}$$O$$_{3n+1}$$ using soft-X-ray angle-resolved photoemission spectroscopy (SX-ARPES). Our results provide direct evidence of an insulator-to-metal transition that occurs upon increasing the dimensionality of the IrO$$_{2}$$-plane structure. This transition occurs when the spin-orbit-coupled $$j_{eff}$$ = 1/2 band changes its behavior in the dispersion relation and moves across the Fermi energy. By scanning the photon energy over 350 eV, we reveal the 3D Fermi surface in SrIrO$$_{3}$$ and $$k_{z}$$-dependent oscillations of photoelectron intensity in Sr$$_{3}$$Ir$$_{2}$$O$$_{7}$$. To corroborate the physics deduced using low-energy ARPES studies, we propose to utilize SX-ARPES as a powerful complementary technique, as this method surveys more than one whole Brillouin zone and provides a panoramic view of electronic structures.

JAEA Reports

Energy confinement and transport of H-mode plasmas in tokamak

Urano, Hajime

JAERI-Research 2004-027, 131 Pages, 2005/02

JAERI-Research-2004-027.pdf:5.69MB

no abstracts in English

Journal Articles

Divertor power handling in a low aspect ratio tokamak reactor

Sakurai, Shinji; Tobita, Kenji; Nishio, Satoshi

Purazuma, Kaku Yugo Gakkai-Shi, 80(11), p.955 - 958, 2004/11

no abstracts in English

Journal Articles

Nearly localized nature of $$f$$ electrons in Ce$$T$$In$$_5$$ ($$T$$=Rh, Ir)

Fujimori, Shinichi; Okane, Tetsuo; Okamoto, Jun; Mamiya, Kazutoshi; Muramatsu, Yasuji; Fujimori, Atsushi*; Harima, Hisatomo*; Aoki, Dai*; Ikeda, Shugo*; Shishido, Hiroaki*; et al.

Physical Review B, 67(14), p.144507_1 - 144507_5, 2003/04

 Times Cited Count:33 Percentile:19.86(Materials Science, Multidisciplinary)

We have performed angle-resolved photoemission spectroscopy ($$hnu=21.2, 40.8$$~eV) and 3$$d$$-4$$f$$ resonant photoemission spectroscopy ($$hnu sim 881$$~eV) studies on the layered cerium compounds Ce$$T$$In$$_5$$ ($$T$$=Rh and Ir), which show competition between superconductivity and antiferromagnetism. The results suggest that the Ce~4$$f$$ electrons in both compounds are nearly localized. We have found that although the Ce~4$$f$$ electrons in the superconducting CeIrIn$$_5$$ are more delocalized than those in the antiferromagnetic CeRhIn$$_5$$, their electronic structures are very similar to each other.

Journal Articles

Pedestal characteristics and extended high-$$beta_{p}$$ ELMy H-mode regime in JT-60U

Kamada, Yutaka; Takenaga, Hidenobu; Isayama, Akihiko; Hatae, Takaki; Urano, Hajime*; Kubo, Hirotaka; Takizuka, Tomonori; Miura, Yukitoshi

Plasma Physics and Controlled Fusion, 44(5A), p.A279 - A286, 2002/05

 Times Cited Count:73 Percentile:9.43(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Spatial structure of internal and edge transport barriers

Fujita, Takaaki

Plasma Physics and Controlled Fusion, 44(5A), p.A19 - A35, 2002/05

 Times Cited Count:22 Percentile:40.29(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Edge-core relationship of ELMy H-mode plasmas in JT-60U

Urano, Hajime*; Kamada, Yutaka; Shirai, Hiroshi; Takizuka, Tomonori; Kubo, Hirotaka; Takenaga, Hidenobu; Miura, Yukitoshi; Hatae, Takaki; Fukuda, Takeshi

Plasma Physics and Controlled Fusion, 44(5A), p.A437 - A443, 2002/05

 Times Cited Count:17 Percentile:48.5(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Photoemission study of quasi-one-dimensional halogen-bridged compound [Ni(chxn)$$_{2}$$Br]Br$$_{2}$$

Fujimori, Shinichi; Ino, Akihiro; Okane, Tetsuo; Fujimori, Atsushi; Okada, Kozo*; Manabe, Toshio*; Yamashita, Masahiro*; Kishida, Hideo*; Okamoto, Hiroshi*

Surface Review and Letters, 9(2), p.1065 - 1069, 2002/04

 Times Cited Count:0 Percentile:100(Chemistry, Physical)

no abstracts in English

Journal Articles

Angle-resolved photoemission study of quasi-two-dimensional heavy-fermion compounds CeRhIn$$_5$$ and CeIrIn$$_5$$

Fujimori, Shinichi; Ino, Akihiro; Okane, Tetsuo; Fujimori, Atsushi; Harima, Hisatomo*; Aoki, Dai*; Ikeda, Shugo*; Shishido, Hiroaki*; Haga, Yoshinori; Tokiwa, Yoshifumi; et al.

Physica B; Condensed Matter, 312-313, p.132 - 133, 2002/03

 Times Cited Count:1 Percentile:91.9(Physics, Condensed Matter)

We have performed angle resolved photoemission experiments on heavy-fermion compounds CeRhIn$$_5$$ and CeIrIn$$_5$$. The obtained spectra are compared with the results of the full-potential linear-augmented-plane-wave (FLAPW) band-structure calculations, treating the Ce 4$$f$$ electrons as being itinerant. The spectral contributions from the ligand Rh, Ir or In states were well reproduced by the calculations, although the features originated from Ce 4$$f$$ states near $$E_{rm F}$$ were not clearly observed.

Journal Articles

Thermal energy confinement of high-triangularity ELMy H-mode plasmas in JT-60U

Urano, Hajime*; Kamada, Yutaka; Shirai, Hiroshi; Takizuka, Tomonori; Kubo, Hirotaka; Hatae, Takaki; Fukuda, Takeshi

Plasma Physics and Controlled Fusion, 44(1), p.11 - 21, 2002/01

 Times Cited Count:21 Percentile:41.61(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Upgrade of ECH system in JT-60U featuring an antenna for toroidal/poloidal beam scan

Moriyama, Shinichi; Ikeda, Yoshitaka; Kajiwara, Ken; Seki, Masami; Sakamoto, Keishi; Takahashi, Koji; Imai, Tsuyoshi; Fujii, Tsuneyuki; JT-60 Team

AIP Conference Proceedings 595, p.322 - 325, 2001/11

no abstracts in English

Journal Articles

Soft X-ray photochemistry in solid surfaces

Sekiguchi, Tetsuhiro; Baba, Yuji

Hoshako, 13(2), p.29 - 37, 2000/04

no abstracts in English

Journal Articles

Development of a detector for measuring effective dose (equivalent) for external photon exposures in natural environment

Tsutsumi, Masahiro; Saito, Kimiaki; Moriuchi, Shigeru*

Journal of Nuclear Science and Technology, 37(3), p.300 - 306, 2000/03

no abstracts in English

Journal Articles

Improvement of angular differential elastic scattering cross sections in nucleon-meson transport code NMTC/JAERI97 for neutron transmission experiment analysis

Takada, Hiroshi; Meigo, Shinichiro; Iga, Kiminori*

Journal of Nuclear Science and Technology, 37(3), p.307 - 315, 2000/03

no abstracts in English

JAEA Reports

Numerical investigation on thermal striping conditions for a tee junction of LMFBR coolant pipes (IV); Investigation on second-order moments in coolant mixing region

JNC-TN9400 2000-008, 323 Pages, 2000/02

JNC-TN9400-2000-008.pdf:25.2MB

This rport presents numerical results on theemal striping characteristics at a tee junction of LMFBR coolant pipe, carried out using a direct numerical simulation code DINUS-3. In the numerical investigations, it was considered a tee junction system consisted of a main pipe (1.33 cm$$^{I.D.}$$) with a 90$$^{circ}$$ elbow and a branch pipe, and four parameters, j.e., (1)diameter ratio $$alpha$$ between both the pipes, (2)flow velocity ratio $$beta$$ between both the pipes, (3)angle $$gamma$$ between both the pipes, and (4)Reynolds number Re. From the numerical investigations, the following characteristics were obtained: (1)According to the decreasing of the diameter ratio, significant area of second-order moments was expanded in the fixed condition of $$beta$$=1.0. (2)Significant second-order moments area was expanded for the increasing of the flow velocity ratio $$beta$$ specified by varying of the main pipe velocity in the case of a $$alpha$$ = 1.0 constant condition. 0n the other hand, the area was expanded for the decreasing of the velocity ratio $$beta$$ defined by varying of the branch pipe velocity in the case of a $$alpha$$ = 3.0 constant condition. (3)Maximum second-order moments values were generated in the case of $$gamma$$ = 180$$^{circ}$$ due to the influence of interactions between main pipe flows and jet flows from the branch pipe. (4)According to the increase of Reynolds number, significant area of second-order moments was expanded due to the activation of turbulence mixing in the main pipe.

Journal Articles

Recent progress towards steady state tokamak operation with improved confinement in JT-60U

Fujita, Takaaki; JT-60 Team

Journal of Plasma and Fusion Research SERIES, Vol.3, p.87 - 93, 2000/00

no abstracts in English

JAEA Reports

None

*; *; *

JNC-TY9400 2000-003, 99 Pages, 1999/08

JNC-TY9400-2000-003.pdf:6.48MB

no abstracts in English

JAEA Reports

Displacement cross section and DPA calculations using NMTC/JAERI

Iga, Kiminori*; Takada, Hiroshi; Ikeda, Yujiro

JAERI-Tech 99-023, 32 Pages, 1999/03

JAERI-Tech-99-023.pdf:1.22MB

no abstracts in English

69 (Records 1-20 displayed on this page)