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Oral presentation

Research on momentum transport in JT-60U and future prospect

Kamada, Yutaka

no journal, , 

no abstracts in English

Oral presentation

Observation of pressure-induced disproportionation reaction of LaH$$_2$$ using vibrational spectroscopies

Sakurai, Yoko; Machida, Akihiko; Aoki, Katsutoshi

no journal, , 

no abstracts in English

Oral presentation

Phase transition of Sn/Ge(111) surface studied by reflection high-energy positron diffraction

Hashimoto, Mie; Fukaya, Yuki; Kawasuso, Atsuo; Ichimiya, Ayahiko

no journal, , 

no abstracts in English

Oral presentation

Present status of the development of the Compton backscattered at sub-MeV energy range; Laser pulse compression with SBS

Kawase, Keigo; Kando, Masaki; Hayakawa, Takehito; Daito, Izuru; Kondo, Shuji; Homma, Takayuki; Kameshima, Takashi; Kotaki, Hideyuki; Chen, L. M.*; Fukuda, Yuji; et al.

no journal, , 

After the confirmation of the generation of the Compton backscattered X-rays with Nd:YAG laser and 150 MeV electron beam pulses at last fiscal year, we make some improvements for increase the generated X-ray flux. As one of them, we are developing the laser pulse compression with the stimulated Brillouin scattering (SBS) to obtain a high peak intensity of the Nd:YAG laser. As the SBS medium, we adopt a liquid fluorocarbon which has well achievements for the pulse compression at ILE at Osaka University. We aim the compressed pulse duration to be less than 1 ns. On this meeting we show the present status of the SBS pulse compression system for the Compton backscattering. In addition, we present the recent result of the Compton backscattering experiment without the laser compression technique.

Oral presentation

Effects of nuclear deformation on fission fragment mass distributions in the reaction of $$^{30}$$Si+$$^{238}$$U

Nishio, 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

Oral presentation

Effect of the laser contrast to laser accelerated electron beams

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

Oral presentation

Oral presentation

Field-induced incommensurate order in the distorted diamond chain

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.

Oral presentation

Photon scattering experiments on nuclei at iron region using a $$gamma$$-ray beam from inverse Compton scattering

Shizuma, Toshiyuki; Hayakawa, Takehito; Kikuzawa, Nobuhiro; Ogaki, Hideaki*; Toyokawa, Hiroyuki*; Komatsubara, Tetsuro*

no journal, , 

no abstracts in English

Oral presentation

Observation of temperature dependence of charge excitation spectra in Sr$$_{14-x}$$Ca$$_x$$Cu$$_{24}$$O$$_{41}$$ ($$x$$ = 0, 6) by resonant inelastic X-ray scattering

Yoshida, Masahiro; Ishii, Kenji; Jarrige, I.; Ikeuchi, Kazuhiko; Murakami, Yoichi*; Mizuki, Junichiro; Tsutsui, Kenji; Toyama, Takami*; Maekawa, Sadamichi*; Kudo, Kazutaka*; et al.

no journal, , 

no abstracts in English

Oral presentation

AMATERAS; A Cold-neutron disk-chopper spectrometer

Nakajima, Kenji; Kawamura, Seiko; Kajimoto, Ryoichi; Inamura, Yasuhiro; Takahashi, Nobuaki; Osakabe, Toyotaka; Wakimoto, Shuichi; Nakamura, Mitsutaka; Ito, Shinichi*; Aizawa, Kazuya; et al.

no journal, , 

no abstracts in English

Oral presentation

In-beam $$gamma$$-ray spectroscopy of $$^{248,250,252}$$Cf using neutron-transfer reactions

Takahashi, Ryuta; Ishii, Tetsuro; Nagae, Daisuke; Asai, Masato; Tsukada, Kazuaki; Toyoshima, Atsushi; Ishii, Yasuo; Matsuda, Makoto; Shizuma, Toshiyuki; Makii, Hiroyuki*; et al.

no journal, , 

no abstracts in English

Oral presentation

Synchrotron radiation photoemission study of uranium compounds

Fujimori, Shinichi; Okochi, Takuo; Okane, Tetsuo; Saito, Yuji; Yamagami, Hiroshi; Fujimori, Atsushi; Aoki, Dai*; Ikeda, Shugo*; Matsuda, Tatsuma; Haga, Yoshinori; et al.

no journal, , 

We have performed synchrotron radiation photoemission study on UFeGa$$_5$$, UB$$_2$$, UPd$$_3$$, UPd$$_2$$Al$$_3$$, UNi$$_2$$Al$$_3$$, URu$$_2$$Si$$_2$$, UPt$$_3$$, UGe$$_2$$, UIr, UPtGa$$_5$$, USb$$_2$$, and UN. Their electronic structures are discussed based on their valence band and core-level photoelectron spectra.

Oral presentation

Software development for neutron experimental instruments at MLF, J-PARC

Nakatani, Takeshi; Inamura, Yasuhiro; Ito, Takayoshi; Kajimoto, Ryoichi; Aoyagi, Tetsuo; Ohara, Takashi; Otomo, Toshiya*; Yasu, Yoshiji*; Suzuki, Jiro*; Morishima, Takahiro*; et al.

no journal, , 

We have started the commissioning of the neutron scattering experiment instruments since May 2008 in MLF, J-PARC. Simultaneously, we have started the commissioning of the data acquisition and analysis software. Experimental users operate this software through the software framework which we have developed. The software framework was developed based on Python which is an object oriented script language. The system implemented with the software framework can seamlessly measure, analyze and visualize with some modules which are experimental control and data analysis. In this presentation, we report the process of the construction and the current status of the software.

Oral presentation

Effect of interfacial roughness correlation on diffuse intensity in a neutron supermirror

Maruyama, Ryuji; Yamazaki, Dai; Ebisawa, Toru*; Soyama, Kazuhiko

no journal, , 

no abstracts in English

Oral presentation

Secondary electron emission from amorphous carbon foils by impact of swift carbon cluster ions

Takahashi, Yasuyuki; Narumi, Kazumasa; Chiba, Atsuya; Saito, Yuichi; Yamada, Keisuke; Ishikawa, Norito; Sugai, Hiroyuki; Maeda, Yoshihito

no journal, , 

no abstracts in English

Oral presentation

Ultrahigh-pressure SR M$"{o}$ssbauer spectroscopy of GdFe$$_{2}$$

Mitsui, Takaya; Seto, Makoto; Masuda, Ryo; Hirao, Naohisa*

no journal, , 

no abstracts in English

Oral presentation

Present status of experimental apparatus for neutron optics and physics at J-PARC BL05

Sakai, Kenji; Muto, Suguru*; Ino, Takashi*; Yoshioka, Tamaki*; Mishima, Kenji*; Taketani, Kaoru*; Shimizu, Hirohiko*

no journal, , 

no abstracts in English

Oral presentation

Control of aberrations in acceleration lens system to form gaseous ion nanobeam

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 %.

106 (Records 1-20 displayed on this page)