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Journal Articles

Development of spin-contrast-variation neutron powder diffractometry for extracting the structure factor of hydrogen atoms

Miura, Daisuke*; Kumada, Takayuki; Sekine, Yurina; Motokawa, Ryuhei; Nakagawa, Hiroshi; Oba, Yojiro; Ohara, Takashi; Takata, Shinichi; Hiroi, Kosuke; Morikawa, Toshiaki*; et al.

Journal of Applied Crystallography, 54(2), p.454 - 460, 2021/04

AA2020-0724.pdf:2.05MB

 Times Cited Count:1 Percentile:17.63(Chemistry, Multidisciplinary)

We developed a spin-contrast-variation neutron powder diffractometry technique that extracts the structure factor of hydrogen atoms, namely, the contribution of hydrogen atoms to a crystal structure factor. Crystals of L-glutamic acid were dispersed in a dpolystyrene matrix containing 4-methacryloyloxy-2,2,6,6,-tetramethyl-1-piperidinyloxy (TEMPO methacrylate) to polarize their proton spins dynamically. The intensities of the diffraction peaks of the sample changed according to the proton polarization, and the structure factor of the hydrogen atoms was extracted from the proton-polarization dependent intensities. This technique is expected to enable analyses of the structures of hydrogen-containing materials that are difficult to determine with conventional powder diffractometry.

Journal Articles

Ratio of transverse diffusion coefficient to mobility of electrons in high-pressure xenon and xenon doped with hydrogen

Kobayashi, Shingo*; Hasebe, Nobuyuki*; Hosojima, Takehiro*; Ishizaki, Takeshi*; Iwamatsu, Kazuhiro*; Mimura, Mitsuteru*; Miyachi, Takashi*; Miyajima, Mitsuhiro*; Pushkin, K.*; Tezuka, Chikara*; et al.

Japanese Journal of Applied Physics, Part 1, 45(10A), p.7894 - 7900, 2006/10

 Times Cited Count:13 Percentile:44.89(Physics, Applied)

We have obtained the ratio of transverse diffusion coeffcient to mobility of electrons multiplied by the elementary charge, in Xe and Xe+H$$_{2}$$ under electric fields at a higher pressure of 1 MPa in comparison with preceding experiments. The result shows that the density effect (non-linear effect) of the ratio in both of pure Xe and Xe+H$$_{2}$$ is $$<$$15% below 1 MPa over the reduced electric field range from 0.08 to 0.6$$times$$10$$^{-17}$$V$$cdot$$cm$$^{2}$$. We also found that the diffusion of an electron swarm is suppressed by adding trace of hydrogen to high-pressure xenon gas. Discussion is made of Xe+H$$_{2}$$ gas to a new $$gamma$$-ray camera. Trace of hydrogen to high-pressure xenon gas. Discussion is made of Xe+H$$_{2}$$ gas to a new $$gamma$$-ray camera.

Journal Articles

Beam-palarization asymmetries for the $$p$$($$overrightarrow{gamma}$$,$$K$$$$^{+}$$)$$Lambda$$ and $$p$$($$overrightarrow{gamma}$$,$$K$$$$^{+}$$)$$Sigma$$$$^{0}$$ reactions for $$E$$$$_{gamma}$$=1.5-2.4 GeV

Zegers, R. G. T.*; Sumihama, Mizuki*; Ahn, D. S.*; Ahn, J. K.*; Akimune, Hidetoshi*; Asano, Yoshihiro; Chang, W. C.*; Dat$'e$, S.*; Ejiri, Hiroyasu*; Fujimura, Hisako*; et al.

Physical Review Letters, 91(9), p.092001_1 - 092001_4, 2003/08

 Times Cited Count:128 Percentile:94.9(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Evidence for a narrow $$S$$ = +1 Baryon resonance in photoproduction from the neutron

Nakano, Takashi*; Ahn, D. S.*; Ahn, J. K.*; Akimune, Hidetoshi*; Asano, Yoshihiro; Chang, W. C.*; Date, S.*; Ejiri, Hiroyasu*; Fujimura, Hisako*; Fujiwara, Mamoru; et al.

Physical Review Letters, 91(1), p.012002_1 - 012002_4, 2003/07

 Times Cited Count:1006 Percentile:99.86(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Impurity desorption behavior from low activation ferritic steel installed in the JFT-2M tokamak

Tsuzuki, Kazuhiro; Sato, Masayasu; Kawashima, Hisato; Ogawa, Hiroaki; Kimura, Haruyuki; Okano, Fuminori; Suzuki, Sadaaki; Komata, Masao; Sawahata, Masayuki; Shinohara, Koji; et al.

Journal of Nuclear Materials, 313-316, p.177 - 181, 2003/03

 Times Cited Count:9 Percentile:53.35(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Extraction of Uranium and Plutonium from Irradiated Fuel in Super-DIREX Reprocessing Method

Miura, Sachiko; Kamiya, Masayoshi; Nomura, Kazunori; Miyachi, Shigehiko; Koyama, Tomozo; Ogumo, Shinya*; Shimada, Takashi*

Abstracts P.30, 30 Pages, 2003/00

None

Journal Articles

Testing for compatibility of reduced activation ferritic steel with plasma on JFT-2M; Partial coverage of the vacuum vessel with ferritic steel

Tsuzuki, Kazuhiro; Isei, Nobuaki; Kawashima, Hisato; Sato, Masayasu; Kimura, Haruyuki; Ogawa, Hiroaki; Miura, Yukitoshi; Ogawa, Toshihide; Shibata, Takatoshi; Akiyama, Takashi*; et al.

Purazuma, Kaku Yugo Gakkai-Shi, 78(5), p.455 - 461, 2002/05

no abstracts in English

Journal Articles

Advanced material tokamak experiment (AMTEX) on JFT-2M; Design, fabrication, installation and conditioning of inside ferritic steel wall

Shibata, Takatoshi; Akiyama, Takashi*; Isei, Nobuaki; Kawashima, Hisato; Kimura, Haruyuki; Miyachi, Kengo; Okano, Fuminori; Sato, Masayasu; Suzuki, Sadaaki; Tsuzuki, Kazuhiro; et al.

Proceedings of 19th IEEE/NPSS Symposium on Fusion Engineering (SOFE), p.360 - 363, 2002/00

no abstracts in English

Journal Articles

Progress of advanced material tokamak experiment (AMTEX) program on JFT-2M

Kimura, Haruyuki; Sato, Masayasu; Kawashima, Hisato; Isei, Nobuaki; Tsuzuki, Kazuhiro; Ogawa, Hiroaki; Ogawa, Toshihide; Miura, Yukitoshi; Yamamoto, Masahiro; Shibata, Takatoshi; et al.

Fusion Engineering and Design, 56-57, p.837 - 841, 2001/10

 Times Cited Count:14 Percentile:68.97(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Development of short-circuit detecting system for toroidal field coil in JT-60

Miyata, Katsuyuki*; Yagyu, Junichi; Miyo, Yasuhiko; *; Arai, Takashi; Miyachi, Kengo; Hosogane, Nobuyuki

KEK Proceedings 99-17 (CD-ROM), 4 Pages, 1999/00

no abstracts in English

Journal Articles

Baking technique of JT-60

Arai, Takashi; Masaki, Kei; Miyachi, Kengo

Shinku, 41(10), p.841 - 845, 1998/00

no abstracts in English

Journal Articles

JT-60 operation results after its modification for higher plasma current with single null open divertor

; Horiike, Hiroshi; Neyatani, Yuzuru; Matsukawa, Makoto; Ando, Toshiro; Yoshino, Ryuji; Arai, Takashi; Ninomiya, Hiromasa; Yamamoto, Masahiro; ; et al.

Proc. of the 14th Symp. on Fusion Engineering,Vol. 1, p.177 - 180, 1992/00

no abstracts in English

Journal Articles

Modifications and operational experience of JT-60 power supplies

; ; ; ; ; Yagyu, Junichi; ; Miyachi, Kengo; *; ; et al.

Fusion Technology 1988, p.1444 - 1448, 1989/00

no abstracts in English

Journal Articles

Modifications and operational experience of JT-60 power supplies

; ; ; ; ; Yagyu, Junichi; ; Miyachi, Kengo; *; ; et al.

Fusion Technology 1988, p.1444 - 1448, 1989/00

no abstracts in English

14 (Records 1-14 displayed on this page)
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