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Maruyama, Ryuji; Yamazaki, Dai; Ebisawa, Toru*; Hino, Masahiro*; Soyama, Kazuhiko
Physica B; Condensed Matter, 385-386(2), p.1256 - 1258, 2006/11
Times Cited Count：25 Percentile：70.4(Physics, Condensed Matter)Neutron supermirror has become an important device to transport, bending and focusing a neutron beam. We have developed it using ion beam sputtering (IBS) instrument since it enables us to produce good quality layers with high density and small grain size. We have also investigated ion-polishing technique, which suppresses the interface roughness of multilayers. We have now installed new IBS instrument with effective deposit area of 500 mm in diameter for the realization of supermirror guide and bender with large effective critical angle. In this presentation, the performance of the supermirrors fabricated with it and the future development of neutron optical devices using supermirrors will be discussed.
Baba, Yuji; Sekiguchi, Tetsuhiro; Shimoyama, Iwao
Surface Science, 593(1-3), p.324 - 330, 2005/11
Times Cited Count：6 Percentile：30.12(Chemistry, Physical)no abstracts in English
Matsunami, Noriaki*; Fukuoka, Osamu*; Shimura, Tetsuo*; Sataka, Masao; Okayasu, Satoru
Nuclear Instruments and Methods in Physics Research B, 230(1-4), p.507 - 511, 2005/04
Times Cited Count：14 Percentile：67.94(Instruments & Instrumentation)no abstracts in English
spectral bands for hydrocarbon-loss-events measured in JT-60U divertor plasmasNakano, Tomohide; Tsuzuki, Kazuhiro; Higashijima, Satoru; Kubo, Hirotaka; Asakura, Nobuyuki
Europhysics Conference Abstracts (CD-ROM), 29C, 4 Pages, 2005/00
Emission rates of CH and C
spectral bands for CH
, CD
_2
loss events due to dissociation, ionization and transport were measured in JT-60U divertor plasmas. The obtained data were used for estimating the chemical sputtering yields by a spectroscopic technique. The CH loss events over one CH photon emission was about 200 at electron temperatures between 30 eV and 70 eV. These values fell within the confidential band of the CD one. The CH
loss events over one CH and one C photon emission were, respectively, between 200 - 300 and between 600 - 1800, and their ratio between 3 - 6. On the assumption that only CH among hydrocarbons generated by chemical sputtering emits the C spectral bands, the intensity of the CH spectral bands originating from CH is inferred from the intensity of C spectral bands multiplied by the obtained ratio, resulting in higher than the measured CH intensity. This result indicates that dominant hydrocarbons generated by the chemical sputtering is not CH but CH.
Kubo, Hirotaka; Takenaga, Hidenobu; Nakano, Tomohide; Higashijima, Satoru; Shimizu, Katsuhiro; Sawada, Keiji*; Kobayashi, Shinji*; JT-60 Team
Nuclear Fusion Research; Springer Series in Chemical Physics, Vol.78, p.121 - 134, 2004/11
no abstracts in English
Nakano, Tomohide; Kado, Shinichiro*
Purazuma, Kaku Yugo Gakkai-Shi, 80(2), p.91 - 100, 2004/02
Descriptions on the band structure of the 
system of a CH radical, the method of hydrocarbon flux measurement and the modeling of hydrocarbon elementary processes are given. Then, the reviews of recent research achievements are presented. At JT-60U divertor plates, the chemical sputtering yields of not only 
but also 
have been measured with simultaneous measurement of CH and 
bands. In MAP-II of the University of Tokyo, hydrocarbon-enhanced molecular assisted recombination processes have been qualitatively proved by comparison of the measured and the modeled CH band intensity.
Suzuki, Satoshi; Ueda, Yoshio*; Tokunaga, Kazutoshi*; Sato, Kazuyoshi; Akiba, Masato
Fusion Science and Technology, 44(1), p.41 - 48, 2003/07
Times Cited Count：28 Percentile：84.98(Nuclear Science & Technology)no abstracts in English
Taniguchi, Masaki; Sato, Kazuyoshi; Ezato, Koichiro; Yokoyama, Kenji; Dairaku, Masayuki; Akiba, Masato
Journal of Nuclear Materials, 313-316(1-3), p.360 - 363, 2003/03
Times Cited Count：10 Percentile：56.43(Materials Science, Multidisciplinary)no abstracts in English
Zhu, X. D.; Naramoto, Hiroshi; Xu, Y.; Narumi, Kazumasa; Miyashita, Kiyoshi*
Physical Review B, 66(16), p.165426_1 - 165426_5, 2002/10
Times Cited Count：14 Percentile：57.58(Materials Science, Multidisciplinary)no abstracts in English
Zhang, Z.; Narumi, Kazumasa; Naramoto, Hiroshi; Wu, Z.*; Yamamoto, Shunya; Miyashita, Atsumi
Journal of Physics; Condensed Matter, 11(25), p.L273 - L277, 1999/06
Times Cited Count：3 Percentile：13.27(Physics, Condensed Matter)no abstracts in English
Higashijima, Satoru; Kubo, Hirotaka; Sugie, Tatsuo; Shimizu, Katsuhiro; Sakasai, Akira; Asakura, Nobuyuki; Sakurai, Shinji; Hosogane, Nobuyuki; Konoshima, Shigeru; Tamai, Hiroshi; et al.
Journal of Nuclear Materials, 266-269, p.1078 - 1083, 1999/00
Times Cited Count：7 Percentile：49.7(Materials Science, Multidisciplinary)no abstracts in English
Soyama, Kazuhiko; ; Ebisawa, Toru*
JAERI-Research 98-067, 61 Pages, 1998/10
JAERI-Research-98-067.pdf:6.88MB
no abstracts in English
Nakamura, Kazuyuki; ; Dairaku, Masayuki; ; Okumura, Yoshikazu; *; Jimbo, Ryutaro*; Bandourko, V.*; Akiba, Masato
Journal of Nuclear Materials, 258-263, p.828 - 832, 1998/00
Times Cited Count：4 Percentile：38.68(Materials Science, Multidisciplinary)no abstracts in English
Bandourko, V.*; Jimbo, Ryutaro*; Nakamura, Kazuyuki; Akiba, Masato
Journal of Nuclear Materials, 258-263, p.917 - 920, 1998/00
Times Cited Count：3 Percentile：31.85(Materials Science, Multidisciplinary)no abstracts in English
Kubo, Hirotaka; Higashijima, Satoru; Takenaga, Hidenobu; Shimizu, Katsuhiro; Kumagai, Akira*; Ishijima, Tatsuo*; Suzuki, Shingo*; Itami, Kiyoshi; Sugie, Tatsuo; Sakasai, Akira; et al.
Proc. of 1998 ICPP & 25th EPS Conf. on Contr. Fusion and Plasma Physics, 22C, p.427 - 430, 1998/00
no abstracts in English
Nakamura, Kazuyuki; Akiba, Masato
Purazuma, Kaku Yugo Gakkai-Shi, 73(6), p.594 - 599, 1997/06
no abstracts in English
C doped CFC under high particle flux with low energyNakamura, Kazuyuki; Dairaku, Masayuki; Akiba, Masato; Okumura, Yoshikazu
Journal of Nuclear Materials, 241-243, p.1142 - 1146, 1997/00
Times Cited Count：9 Percentile：60.17(Materials Science, Multidisciplinary)no abstracts in English
*; Saido, Masahiro; Nakamura, Kazuyuki; Akiba, Masato; ; Goto, Yoshitaka*; *; *; Yamaki, Takahiro*; *; et al.
Journal of Nuclear Materials, 233-237(PT.A), p.781 - 786, 1996/00
Times Cited Count：13 Percentile：72.4(Materials Science, Multidisciplinary)no abstracts in English
Kubo, Hirotaka; Sugie, Tatsuo; Shimizu, Katsuhiro; Sakasai, Akira; Higashijima, Satoru; Koide, Yoshihiko; Asakura, Nobuyuki; Shimada, Michiya; JT-60 Team
UV and X-Ray Spectroscopy of Astrophysical and Laboratory Plasmas (Frontiers Science Series No. 15), 0, p.29 - 34, 1996/00
no abstracts in English
Shimizu, Katsuhiro; Takizuka, Tomonori
Purazuma, Kaku Yugo Gakkai-Shi, 71(11), p.1135 - 1146, 1995/11
no abstracts in English
