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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

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

Laser-driven proton beam irradiation on in-vitro human cancer cells

Yogo, Akifumi; Sato, Katsutoshi*; Nishikino, Masaharu; Mori, Michiaki; Teshima, Teruki*; Numasaki, Hodaka*; Murakami, Masao*; Ogura, Koichi; Sagisaka, Akito; Orimo, Satoshi; et al.

no journal, , 

In this work, we demonstrate the irradiation effect of laser accelerated protons induced on human lung cancer cells. In-vitro A549 cells are irradiated with a proton dose of 20 Gy, resulting in a distinct formation of $$gamma$$-H2AX foci as an indicator of DNA double-strand breaks. This is the first result showing that laser-driven ion beams can generate a lethal effect on cancer cells.

Oral presentation

Dissociative ionization dynamics of ethanol in intense laser fields by photoelectron-photoion coincidence momentum imaging

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.

Oral presentation

Photoconductivity variations of hydrogenated amorphous silicon by charged particles

Sato, Shinichiro; Sai, Hitoshi*; Imaizumi, Mitsuru*; Shimazaki, Kazunori*; Oshima, Takeshi

no journal, , 

no abstracts in English

Oral presentation

Positron annihilation measurements on Si near the melting point

Kawasuso, Atsuo; Maekawa, Masaki

no journal, , 

no abstracts in English

Oral presentation

Energy stability analyses of Fe+M binary alloy using extended semi-empirical computational method

Igarashi, Takahiro; Nakazawa, Tetsuya; Tsuru, Tomohito; Kaji, Yoshiyuki

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 %.

Oral presentation

Study of uranium chalcogenides by soft X-ray photoemission spectroscopy

Takeda, Yukiharu; Okane, Tetsuo; Okochi, Takuo; Saito, Yuji; Yamagami, Hiroshi; Fujimori, Atsushi; Ochiai, Akira*

no journal, , 

no abstracts in English

Oral presentation

Study of low-lying nuclear structure of $$^{102}$$Ru

Koizumi, Mitsuo; Toh, Yosuke; Oshima, Masumi; Kimura, Atsushi; Hatsukawa, Yuichi; Harada, Hideo; Kitatani, Fumito; Nakamura, Shoji; Furutaka, Kazuyoshi; Sugawara, Masahiko*; et al.

no journal, , 

no abstracts in English

Oral presentation

$$^{149}$$Sm synchrotron M$"{o}$ssbauer studies on hydrides of rare-earth-iron compounds

Masuda, Ryo; Mitsui, Takaya; Ito, Keiji*; Kobayashi, Yasuhiro*; Kitao, Shinji*; Seto, Makoto

no journal, , 

no abstracts in English

Oral presentation

Current status of software development for chopper spectrometer in MLF

Inamura, Yasuhiro; Nakajima, Kenji; Kajimoto, Ryoichi; Otomo, Toshiya*; Nakatani, Takeshi; Suzuki, Jiro*; Arai, Masatoshi; So, J.-Y.*; Park, J.-G.*; Perring, T.*; et al.

no journal, , 

We report the plan and current status of development for software used on high-intensity chopper spectrometer, 4SEASONS, and Cold Neutron Disk-Chopper Spectrometer, CNDCS, at Materials and Life Science Facility(MLF), J-PARC. We begin to design software packages based on many required functions for performing experiments and analysis, for example control spectrometer system (data acquisition, devices), suggestion of experiment conditions, visualization and so on. This project progresses with software company. On the other hand, we started to collaborate with Korean group about the development of analysis software for inelastic scattering. In this presentation, we will present the current status and plan for software development including collaboration with Korean group.

Oral presentation

A Magnetic multiplet lens for pulsed neutron beam focusing

Oku, Takayuki; Kira, Hiroshi; Shinohara, Takenao; Takata, Shinichi; Arai, Masatoshi; Suzuki, Junichi

no journal, , 

no abstracts in English

Oral presentation

Detection of electromagnetic radiation from solitons formed by laser-plasma interaction

Kando, Masaki; Kawase, Keigo; Kameshima, Takashi; Kotaki, Hideyuki; Daito, Izuru; Fukuda, Yuji; Faenov, A. Ya.; Pikuz, T.*; Esirkepov, T. Zh.; Bulanov, S. V.

no journal, , 

no abstracts in English

Oral presentation

Current status of TAKUMI, the engineering materials diffractometer at MLF/J-PARC

Ito, Takayoshi; Harjo, S.; Aizawa, Kazuya; Moriai, Atsushi; Abe, Jun; Arima, Hiroshi; Nakatani, Takeshi; Sakasai, Kaoru; Nakamura, Tatsuya; Iwahashi, Takaaki; et al.

no journal, , 

no abstracts in English

Oral presentation

Pressure dependence of Yb valence in Cd-Mg-Yb quasicrystal

Kawana, Daichi; Watanuki, Tetsu; Machida, Akihiko; Aoki, Katsutoshi; Tsai, A. P.*

no journal, , 

no abstracts in English

Oral presentation

Transport properties of neptunium superconductor NpPd$$_5$$Al$$_2$$

Matsuda, Tatsuma; Haga, Yoshinori; Aoki, Dai*; Tateiwa, Naoyuki; Homma, Yoshiya*; Ikeda, Shugo*; Shiokawa, Yoshinobu*; Settai, Rikio*; Onuki, Yoshichika

no journal, , 

no abstracts in English

106 (Records 1-20 displayed on this page)