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Journal Articles

High-energy X-ray diffraction studies of non-crystalline materials

Ono, Hideo; Kohara, Shinji*; Umesaki, Norimasa*; Suzuya, Kentaro

Journal of Non-Crystalline Solids, 293-295, p.125 - 135, 2001/11

no abstracts in English

Journal Articles

High-energy X-ray diffraction studies of non-crystalline materials

Ono, Hideo; Kohara, Shinji*; Umesaki, Norimasa*; Suzuya, Kentaro

Journal of Non-Crystalline Solids, 293-295, p.125 - 135, 2001/11

 Times Cited Count:22 Percentile:71.19(Materials Science, Ceramics)

no abstracts in English

Journal Articles

Short-range structure of vitreous P$$_{2}$$O$$_{5}$$ by MD simulation

Suzuki, Yoshihiro*; Takase, Keiichi*; Akiyama, Isao*; Suzuya, Kentaro; Umesaki, Norimasa*; Otori, Norikazu*

Materials Transactions, 42(11), p.2242 - 2246, 2001/11

 Times Cited Count:7 Percentile:48.95(Materials Science, Multidisciplinary)

We have performed the molecular dynamics (MD) simulations for vitreous P$$_{2}$$O$$_{5}$$ using isotropic pair potentials composed only of coulombic and repulsive interaction. The obtained P-O pair distribution function reproduced the two peaks expected from the results of neutron diffraction experiments, in the nearest-neighbor P-O correlation. The neutron-weighted real-space correlation function were also in semi-quantitative agreement with that from the experimental results. The distribution of coordination number for O around P and P around O showed that most P atoms form tetrahedral PO$$_{4}$$ units in the glass and three-fifths of O atoms are bridging oxygen, O$$_{B}$$, and the others are terminal one, O$$_{T}$$. The pair distribution functions for P-O$$_{B}$$ and P-O$$_{T}$$ clarified the PO$$_{4}$$ units have three long P-O$$_{B}$$ bonds and one short P-O$$_{T}$$ bond. We have concluded that the short-range structure for vitreous P$$_{2}$$O$$_{5}$$ agrees well with the picture derived from many experiments.

Journal Articles

A Horizontal two-axis diffractometer for high-energy X-ray diffraction using synchtoron radiation on bending magnet beamline BL04B2 at SPring-8

Kohara, Shinji*; Suzuya, Kentaro; Kashihara, Yasuharu*; Matsumoto, Norimasa; Umesaki, Norimasa*; Sakai, Ichiro*

Nuclear Instruments and Methods in Physics Research A, 467-468(Part.2), p.1030 - 1033, 2001/07

 Times Cited Count:128 Percentile:99.13(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Neutron inelastic scattering study of densified GeO$$_{2}$$ glass

Suzuya, Kentaro; Shibata, Kaoru*; Umesaki, Norimasa*; Kitamura, Naoyuki*; Kohara, Shinji*

Journal of the Physical Society of Japan, Vol.70, Supplement A, p.256 - 258, 2001/05

no abstracts in English

Journal Articles

Structural studies of K$$_{2}$$O-B$$_{2}$$O$$_{3}$$ melts and glasses

Umesaki, Norimasa*; Kita, Y.*; Iida, T.*; Handa, K.*; Kohara, Shinji*; Suzuya, Kentaro; Fukunaga, Toshiharu*; Misawa, Masakatsu*

Physics and Chemistry of Glasses, 41(5), p.304 - 308, 2000/10

no abstracts in English

Journal Articles

High energy X-ray study on the structure of vitreous B$$_{2}$$O$$_{3}$$

Yoneda, Yasuhiro*; Kohara, Shinji*; Suzuya, Kentaro; Umesaki, Norimasa*

Physics and Chemistry of Glasses, 41(5), p.282 - 285, 2000/10

no abstracts in English

Journal Articles

Structure of K$$_{2}$$O-B$$_{2}$$O$$_{3}$$ glasses and melts

Umesaki, Norimasa*; Kita, Y.*; Handa, K.*; Kohara, Shinji*; Suzuya, Kentaro; Fukunaga, T.*; Misawa, M.*; Iida, T.*

Denki Kagaku Oyobi Kogyo Butsuri Kagaku, 67(6), p.541 - 546, 1999/00

no abstracts in English

Journal Articles

Structure of M$$_{2}$$O-B$$_{2}$$O$$_{3}$$ (M: Na and K) glasses and melts by neutron diffraction

Handa, K.*; Kita, Y.*; Kohara, Shinji*; Suzuya, Kentaro; Fukunaga, Toshiharu*; Misawa, Masakatsu*; Iida, T.*; *; Umesaki, Norimasa*

Journal of Physics and Chemistry of Solids, 60(8-9), p.1465 - 1471, 1999/00

 Times Cited Count:14 Percentile:62.1(Chemistry, Multidisciplinary)

no abstracts in English

Journal Articles

Pressure-induced structure change of molten KCl

Urakawa, Satoru*; Igawa, Naoki; Umesaki, Norimasa*; Igarashi, Kazuo*; Shimomura, Osamu*; Ono, Hideo

High Pressure Research, 14(4-6), p.375 - 382, 1996/12

 Times Cited Count:6 Percentile:53.84(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

A Computer simulation study of the structural similarities between fluoroberyllate and alkaline earth silicate melts

Umesaki, Norimasa*; Ono, Hideo; Igarashi, Kazuo*; *

Journal of Non-Crystalline Solids, 150, p.302 - 306, 1992/00

 Times Cited Count:0 Percentile:0.05(Materials Science, Ceramics)

no abstracts in English

Journal Articles

Fabrication and physical properties of AlF$$_{3}$$-BeF$$_{2}$$ based fluoride glasses for IR transmission

Ono, Hideo; Igawa, Naoki; Ishii, Yoshinobu; Umesaki, Norimasa*; *

Journal of Nuclear Materials, 191-194, p.525 - 529, 1992/00

no abstracts in English

Oral presentation

Development of pyrochemical reprocessing technology based on Co-electrodeposition method, 12; General overview and electrodeposition test

Myochin, Munetaka; Kofuji, Hirohide; Yamana, Hajimu*; Shirai, Osamu*; Yamamura, Tsutomu*; Umesaki, Norimasa*; Matsuura, Haruaki*; Kajinami, Akihiko*; Iwadate, Yasuhiko*; Otori, Norikazu*; et al.

no journal, , 

no abstracts in English

Oral presentation

Upgrading and achievements in the industrial analysis beamline BL05

Hasegawa, Takayuki*; Uemura, Masaharu*; Takueuchi, Kazuki*; Kodaka, Takuya*; Fukada, Noboru*; Umesaki, Norimasa*; Fukushima, Sei*; Teraoka, Yuden; Haruyama, Yuichi*; Niibe, Masahito*; et al.

no journal, , 

no abstracts in English

14 (Records 1-14 displayed on this page)
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