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Kotaki, Hideyuki; Kando, Masaki; Daito, Izuru; Homma, Takayuki; Kameshima, Takashi; Kawase, Keigo; Chen, L. M.*; Fukuda, Yuji; Kiriyama, Hiromitsu; Kondo, Shuji; et al.
no journal, ,
no abstracts in English
Hosaka, Koichi; Itakura, Ryuji; Yokoyama, Keiichi; Yamanouchi, Kaoru*; Yokoyama, Atsushi
no journal, ,
In intense laser fields, molecules are decomposed into fragments through a number of competing dissociative ionization pathways. We investigate the dissociative ionization dynamics of ethanol in intense laser fields with photoelectron-photoion coincidence momentum imaging. The channel-specific photoelectron spectra reveal the electronic states prepared just after ionization, depending both on the decomposition pathways and on the temporal profile of laser pulses.
Ikeda, Takashi
no journal, ,
no abstracts in English
Sato, Shinichiro; Sai, Hitoshi*; Imaizumi, Mitsuru*; Shimazaki, Kazunori*; Oshima, Takeshi
no journal, ,
no abstracts in English
Sakai, Toru; Tonegawa, Takashi*; Okamoto, Kiyomi*
no journal, ,
The S=1/2 distorted diamond chain is investigated by the density matrix renormalization group and the numerical exact diagonalization. We found that an incommensurate long-range order is induced by the external magnetic field above the 1/3 magnetization plateau. We using this result theoretically explain the field induced incommensurate order observed in the azurite.
Mizumaki, Masaichiro*; Agui, Akane; Saito, Takashi*; Azuma, Masaki*; Shimakawa, Yuichi*; Takano, Mikio*; Uozumi, Takayuki*
no journal, ,
no abstracts in English
Tokunaga, Yo; Fujimoto, Tatsuya*; Sakai, Hironori; Chudo, Hiroyuki; Kambe, Shinsaku; Matsuda, Tatsuma; Haga, Yoshinori; Onuki, Yoshichika
no journal, ,
no abstracts in English
Iimura, Hideki; Buchinger, F.*
no journal, ,
no abstracts in English
Onishi, Hiroaki; Dagotto, E.*
no journal, ,
no abstracts in English
Yanagibayashi, Jun; Nakano, Tomohide; Hasuo, Masahiro*; Iwamae, Atsushi; Kubo, Hirotaka; Itami, Kiyoshi
no journal, ,
Tungsten is one of the candidates for the divertor material of ITER because of its low retention and low hydrogen inventory. However, it is a problem that tungsten ions accumulated in a core plasma emit intense radiation and cool the plasma. For preparation of investigating the mechanism of the tungsten ion accumulation, Vaccum Ultra Violet (VUV) lines emitted from tungsten ions are identified. A VUV spectrum from a JT-60U plasma (
keV) is observed with a flat-field grazing-incidence spectrometer. The observed spectrum is compared with a theoretical spectrum calculated with Flexible Atomic Code. It is found that the observed peaks around 3 nm are due to transitions between 
levels of W
(
), and that those around 5, 6 and 13 nm are due to transitions between 
levels of W (
). It is believed that the former lines are useful to diagnose the tungsten ion accumulation in a high-temperature (
10 keV) plasma of ITER.
YCuO
magnetic superconductorMochiku, Takashi*; Hata, Yoshiaki*; Tuerxun, W.*; Igawa, Naoki; Hoshikawa, Akinori*; Ishigaki, Toru*; Yasuoka, Hiroshi*; Hirata, Kazuto*
no journal, ,
FeSrYCuO is known as the BaYCuO related super conducting compound with the substitution of the Fe for Cu, only when it is annealed in reduced atmosphere and subsequently in oxidized atmosphere. In this study, we have performed neutron powder diffraction of FeSrYCuO to investigate the magnetic disorder-ordering mechanism. No magnetic reflection was observed even below the magnetic transition temperature. This result indicated that the material has not long-range magnetic-ordering.
Al
superconductor, 2Haga, Yoshinori; Homma, Yoshiya*; Matsuda, Tatsuma; Tateiwa, Naoyuki; Aoki, Dai*; Onuki, Yoshichika
no journal, ,
no abstracts in English
- interaction on the multi-Kaonic nucleiMuto, Takumi*; Maruyama, Toshiki; Tatsumi, Toshitaka*
no journal, ,
no abstracts in English
Igarashi, Takahiro; Nakazawa, Tetsuya; Tsuru, Tomohito; Kaji, Yoshiyuki
no journal, ,
no abstracts in English
Fe(CO
)(HO)Matsuda, Masaaki; Honda, Zentaro*
no journal, ,
We performed neutron inelastic scattering experiments in NaFe(CO)(HO) that consists of two-leg spin ladders of Fe
ions. We observed sharp magnetic excitation peaks around 
3.5 meV and 5.3 meV. This result shows that the magnetic excitations originate from almost isolated dimers, indicating that the interaction along the leg direction is negligibly small.
OWakimoto, Shuichi; Kimura, Hiroyuki*; Fukunaga, Mamoru*; Takeda, Masayasu; Kakurai, Kazuhisa; Noda, Yukio*
no journal, ,
no abstracts in English
Sr
NiO
and LaBaCuOWakimoto, Shuichi; Ishii, Kenji; Ikeuchi, Kazuhiko; Kakurai, Kazuhisa; Mizuki, Junichiro; Kimura, Hiroyuki*; Noda, Yukio*; Adachi, Tadashi*; Koike, Yoji*; Fujita, Masaki*; et al.
no journal, ,
no abstracts in English
Okubo, Takeru; Ishii, Yasuyuki
no journal, ,
Chromatic and spherical aberrations are hindrance in a development of acceleration lens system to form the nanobeam with 1 MeV ion beam. However, chromatic and spherical aberrations are hindrance to form the nanobeam. Optics simulations were carried out to show that a combination of acceleration lenses and deceleration lenses is effective to reduce chromatic and spherical aberrations in the acceleration lens system. As a result, the deceleration energy of 15 keV for the 46 keV hydrogen molecule ion beam enabled us to reduce the chromatic aberration coefficient by 26 % and the spherical aberration coefficient by 17 %, and the beam current increased by 27 %.
Takeda, Yukiharu; Okane, Tetsuo; Okochi, Takuo; Saito, Yuji; Yamagami, Hiroshi; Fujimori, Atsushi; Ochiai, Akira*
no journal, ,
no abstracts in English
Si+
UNishio, Katsuhisa; Ikezoe, Hiroshi; Nishinaka, Ichiro; Mitsuoka, Shinichi; Nagame, Yuichiro; Watanabe, Yutaka*; Otsuki, Tsutomu*; Hirose, Kentaro*; Sato, Hiroki*; Hofmann, S.*
no journal, ,
no abstracts in English