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

https://doi.org/10.1080/00223131.2019.1691073

no abstracts in English

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

https://doi.org/10.1103/PhysRevB.94.115103

In this study, we systematically investigate three-dimensional(3D) momentum-resolved electronic structures of Ruddlesden-Popper-type iridium oxides SrIrO 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-plane structure. This transition occurs when the spin-orbit-coupled = 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 and -dependent oscillations of photoelectron intensity in SrIrO. 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.

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

https://doi.org/10.1585/jspf.80.955

no abstracts in English

Pedestal characteristics and extended high- 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

https://doi.org/10.1088/0741-3335/44/5A/328

no abstracts in English

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

https://doi.org/10.1088/0741-3335/44/5A/348

no abstracts in English

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

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

https://doi.org/10.1016/S0921-4526(01)01476-4

We have performed angle resolved photoemission experiments on heavy-fermion compounds CeRhIn and CeIrIn. The obtained spectra are compared with the results of the full-potential linear-augmented-plane-wave (FLAPW) band-structure calculations, treating the Ce 4 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 states near were not clearly observed.

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

https://doi.org/10.1063/1.1424201

no abstracts in English

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

https://doi.org/10.3327/jnst.37.300

no abstracts in English

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) with a 90 elbow and a branch pipe, and four parameters, j.e., (1)diameter ratio between both the pipes, (2)flow velocity ratio between both the pipes, (3)angle 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 =1.0. (2)Significant second-order moments area was expanded for the increasing of the flow velocity ratio specified by varying of the main pipe velocity in the case of a = 1.0 constant condition. 0n the other hand, the area was expanded for the decreasing of the velocity ratio defined by varying of the branch pipe velocity in the case of a = 3.0 constant condition. (3)Maximum second-order moments values were generated in the case of = 180 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.

None

*; *; *

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

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

no abstracts in English