Synergistic effect of heat shock protein 90 inhibitor, 17-allylamino-17-demethoxygeldanamycin and X-rays, but not carbon-ion beams, on lethality in human oral squamous cell carcinoma cells

Musha, Atsushi*; Yoshida, Yukari*; Takahashi, Takeo*; Ando, Koichi*; Funayama, Tomoo; Kobayashi, Yasuhiko; Negishi, Akihide*; Yokoo, Satoshi*; Nakano, Takashi*

Journal of Radiation Research, 53(4), p.545 - 550, 2012/07

https://doi.org/10.1093/jrr/rrs012

New technique for inelastic neutron scattering measurement demonstrated on the chopper spectrometer 4SEASONS at J-PARC

Kajimoto, Ryoichi; Nakamura, Mitsutaka; Inamura, Yasuhiro; Mizuno, Fumio; Yokoo, Tetsuya*; Nakatani, Takeshi; Arai, Masatoshi; Fujita, Masaki*

Kotai Butsuri, 45(2), p.79 - 89, 2010/02

http://ci.nii.ac.jp/naid/40017025649

Inelastic neutron scattering measurement using multiple incident energies can drastically enhances the measurement efficiency. The article reviews the principle of this new technique and an example of the measurement using the chopper spectrometer 4SEASONS of the pulsed neutron experimental facility in Japan Proton Accelerator Research Complex (J-PARC).

Study of the neutron guide design of the 4SEASONS spectrometer at J-PARC

Kajimoto, Ryoichi; Nakajima, Kenji; Nakamura, Mitsutaka; Soyama, Kazuhiko; Yokoo, Tetsuya*; Oikawa, Kenichi; Arai, Masatoshi

Nuclear Instruments and Methods in Physics Research A, 600(1), p.185 - 188, 2009/02

https://doi.org/10.1016/j.nima.2008.11.028

no abstracts in English

High intensity chopper spectrometer 4SEASONS at J-PARC

Kajimoto, Ryoichi; Yokoo, Tetsuya*; Nakajima, Kenji; Nakamura, Mitsutaka; Soyama, Kazuhiko; Ino, Takashi*; Shamoto, Shinichi; Fujita, Masaki*; Oyama, Kenji*; Hiraka, Haruhiro*; et al.

Journal of Neutron Research, 15(1), p.5 - 12, 2007/03

https://doi.org/10.1080/10238160601048742

We are developing a new chopper-type neutron inelastic spectrometer 4SEASONS for the spallation neutron source at J-PARC. This spectrometer has middle energy resolution and two orders higher efficiency than the ones at ISIS for a single crystal measurement. With this spectrometer, we try to explore novel quantum phenomena, in particular, the mechanism of the high- superconductivity. The high flux at a sample is achieved by incorporating the well designed transport devices in addition to the high flux of the source. The energy resolution is estimated to be 5-6% at = 0. Furthermore, the most distinguishing feature of 4SEASONS is the availability of the repetition rate multiplication (RRM) method. The RRM method enables us to utilize many 's at the same time, which will increase the efficiency of the measurement more than five times and make the survey of 4D space of - much easier.

Low energy vibrational excitations characteristic of superionic glass

Nakamura, Mitsutaka; Iwase, Hiroki; Arai, Masatoshi; Kartini, E.*; Russina, M.*; Yokoo, Tetsuya*; Taylor, J. W.*

Physica B; Condensed Matter, 385-386(1), p.552 - 554, 2006/11

https://doi.org/10.1016/j.physb.2006.05.274

The mechanism of high ionic conductivity in superionic glass constitute an unsolved problem in the field of science.Here we performed inelastic neutron scattering measurements of superionic glass system (AgI)(AgS)(AgPO) by using MARI spectrometer at ISIS, and found that the -dependence of inelastic intensity in the energy region from 1 to 3 meV of superionic phase glass shows an excess intensity above =1.8 compared with insulator phase one. Similar phenomena were also observed in another superionic glass (AgI)(AgPO) by using NEAT spectrometer at HMI with high resolution measurement. These results clearly suggest peculiar low energy vibrational excitations should be universal features of superionic glass.

Irradiation tests of critical components for remote handling system in gamma radiation environment

Obara, Kenjiro; Kakudate, Satoshi; Oka, Kiyoshi; Furuya, Kazuyuki; ; Tada, Eisuke; Shibanuma, Kiyoshi; Koizumi, Koichi; Okawa, Yoshinao; Morita, Yosuke; et al.

JAERI-Tech 96-011, 111 Pages, 1996/03

JAERI-Tech-96-011.pdf:5.9MB

no abstracts in English

Chopper spectrometer 4SEASONS for J-PARC

Kajimoto, Ryoichi; Yokoo, Tetsuya*; Nakajima, Kenji; Nakamura, Mitsutaka; Inamura, Yasuhiro; Maruyama, Ryuji; Soyama, Kazuhiko; Suzuya, Kentaro; Ino, Takashi*; Oyama, Kenji*; et al.

no journal, , 

no abstracts in English

New method for inelastic neutron scattering demonstrated at J-PARC

Kajimoto, Ryoichi; Nakamura, Mitsutaka; Inamura, Yasuhiro; Mizuno, Fumio; Fujita, Masaki*; Yokoo, Tetsuya*; Arai, Masatoshi

no journal, , 

no abstracts in English

Starting-up of the chopper spectrometer 4SEASONS in J-PARC

Kajimoto, Ryoichi; Nakamura, Mitsutaka; Yokoo, Tetsuya*; Inamura, Yasuhiro; Mizuno, Fumio; Nakajima, Kenji; Takahashi, Nobuaki; Kawamura, Seiko; Maruyama, Ryuji; Soyama, Kazuhiko; et al.

no journal, , 

Current status of sample environment in MLF, J-PARC

Kawamura, Seiko; Yokoo, Tetsuya*; Kambara, Wataru; Inamura, Yasuhiro; Nakatani, Takeshi; Torii, Shuki*; Kajimoto, Ryoichi; Nakajima, Kenji; Kaneko, Koji; Kawakita, Yukinobu; et al.

no journal, , 

Materials and Life Science Experimental Facility at J-PARC started the user program in December 2008. Various neutron experiments are currently performed there in wide range of scientific researches and industrial applications. Standardization of sample environment (SE) equipments is one of the most important things at the beginning stage. Especially in our country, it often happens that each instrument carries and operates SE devices independently. This situation results in an excess of the cost and incompatibility among the instruments unless we have any guidelines. Thus the SE team has discussed the SE-protocol, in which flange size, thermometers, controllers etc. are standardized. This should bring about saving the cost and manpower and increasing compatibility. The SE team is now discussing user support system in SE, preparation of the SE area, and so on. The technical staff members started working on practical things such as cooling test of cryostats.