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Isayama, Akihiko; Sakakibara, Satoru*; Furukawa, Masaru*; Matsunaga, Go; Yamazaki, Kozo*; Watanabe, Kiyomasa*; Idomura, Yasuhiro; Sakamoto, Yoshiteru; Tanaka, Kenji*; Tamura, Naoki*; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 86(6), p.374 - 377, 2010/06
no abstracts in English
Osakabe, Masaki*; Shinohara, Koji; Toi, Kazuo*; Todo, Yasushi*; Hamamatsu, Kiyotaka; Murakami, Sadayoshi*; Yamamoto, Satoshi*; Idomura, Yasuhiro; Sakamoto, Yoshiteru; Tanaka, Kenji*; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 85(12), p.839 - 842, 2009/12
no abstracts in English
Idomura, Yasuhiro; Yoshida, Maiko; Yagi, Masatoshi*; Tanaka, Kenji*; Hayashi, Nobuhiko; Sakamoto, Yoshiteru; Tamura, Naoki*; Oyama, Naoyuki; Urano, Hajime; Aiba, Nobuyuki; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 84(12), p.952 - 955, 2008/12
no abstracts in English
Nagasaki, Kazunobu*; Isayama, Akihiko; Hayashi, Nobuhiko; Ozeki, Takahisa; Takechi, Manabu; Oyama, Naoyuki; Ide, Shunsuke; Yamamoto, Satoshi*; JT-60 Team
Nuclear Fusion, 45(12), p.1608 - 1617, 2005/12
Times Cited Count：32 Percentile：68.41(Physics, Fluids & Plasmas)no abstracts in English
La fed by the Ce beta-decayIimura, Hideki; Asai, Masato; Ichikawa, Shinichi; Katakura, Junichi; Magara, Masaaki; Osa, Akihiko; Oshima, Masumi; Shinohara, Nobuo; Yamamoto, Hiroshi*
European Physical Journal A, 23(1), p.33 - 39, 2005/01
Times Cited Count：2 Percentile：23.51(Physics, Nuclear)The low-lying levels in La have been studied through the 
-decay of Ce (
= 29 s) produced by bombarding a 
Mo target with a 185-MeV 
Cl beam. Reaction products were on-line mass-separated, and 
-ray singles and - coincidence measurements were performed. Conversion electrons were also measured and multipolarities of transitions have been derived. A half-life of an excited state was determined by the - delayed coincidence technique. The level scheme obtained has been compared with calculations based on the Nilsson model.
Nagasaki, Kazunobu*; Isayama, Akihiko; Hayashi, Nobuhiko; Ozeki, Takahisa; Takechi, Manabu; Oyama, Naoyuki; Ide, Shunsuke; Yamamoto, Satoshi*; JT-60 Team
Proceedings of 20th IAEA Fusion Energy Conference (FEC 2004) (CD-ROM), 8 Pages, 2004/11
no abstracts in English
discharges and real-time control of current profile in JT-60USuzuki, Takahiro; Isayama, Akihiko; Sakamoto, Yoshiteru; Ide, Shunsuke; Fujita, Takaaki; Takenaga, Hidenobu; Luce, T. C.*; Wade, M. R.*; Oikawa, Toshihiro; Naito, Osamu; et al.
Proceedings of 20th IAEA Fusion Energy Conference (FEC 2004) (CD-ROM), 8 Pages, 2004/11
no abstracts in English
Kudo, Takeshi; Yamamoto, Akihiko*; Nohara, Tsuyoshi; Kinoshita, Hirohisa; Shichi, Ryuichi*
Earth Planets and Space, 56(5), p.e5 - e8, 2004/00
Times Cited Count：7 Percentile：20.41(Geosciences, Multidisciplinary)We investigate whether distributions of topographic lineaments in Chugoku district, Japan, may be related to variations of standard deviation (SD) of gravity anomalies. Tectonic movement may disturb lateral continuities of crustal structures at weak zones. These lateral discontinuities of the density structure cause undulations of gravity anomaly fields whose complexities can be an indicator of the past crustal instability. On the other hand, topographic lineaments are formed along weak crustal zones. We would expect therefore that the gravity anomaly complexities have some relations to distributions of surface lineaments. As an index of gravity anomaly complexities in terms of which we interpret spatial distribution of topographic lineaments, we employ Bouguer anomaly SD inside a circular region with adequate radius. The results show that locations of the lineaments, which could be diagnostic of heterogeneity of the previously damaged crust, tend to coincide with those of high SD area
Kudo, Takeshi; Nohara, Tsuyoshi; Kinoshita, Hirohisa; Yamamoto, Akihiko*; Shichi, Ryuichi*
American Geophysical Union 2003 Fall Meeting, P. F1428, 2003/00
Relationship between distributions of topographic lineaments and variations of standard deviation of gravity anomalies in Chugoku district, Japan is investigated. Tectonic movement may disturb lateral continuities of crustal structures at weak zones. Lateral discontinuities of the density structure cause undulations of gravity anomaly field over them. Therefore, complexities of the gravity anomaly field might be an indicator of the past crustal instability. On the other hand, topographic lineaments are formed along zones of inherent crustal weakness. Therefore, the gravity anomaly complexities should have some relations to distributions of surface lineaments. In order to verify this conjecture, we investigated gravity anomaly complexities in relation to the spatial distributions of topographic lineaments.
Ushigusa, Kenkichi; Ide, Shunsuke; Oikawa, Toshihiro; Suzuki, Takahiro; Kamada, Yutaka; Fujita, Takaaki; Ikeda, Yoshitaka; Naito, Osamu; Matsuoka, Mamoru*; Kondoh, Takashi; et al.
Fusion Science and Technology (JT-60 Special Issue), 42(2-3), p.255 - 277, 2002/09
Times Cited Count：10 Percentile：15.15(Nuclear Science & Technology)Studies on non-inductive current drive and development of an integrated steady-state high performance operation in JT-60 are reviewed. Experiments on lower hybrid current drive in JT-60 haven shown a large non-inductive current up to 3.5MA, high current drive efficiency of 3.6x1019m-2A/W. Basic studies on LH waves in JT-60 have contributed to understand current drive physics. Significant progress in neutral beam current drive has been made in JT-60 by testing the performance of negative ion based NBI (N-NBI). The CD efficiency of ~1.5x1019m-2A /W, and N-NB driven current of ~1MA have been demonstrated in N-NBCD. Strongly localized driven current by electron cyclotron current drive was identified with a fundamental O-mode scheme. Efficiency of 0.5x1019m-2A/W and EC driven current of 0.2MA were achieved and suppression of neo-classical tearing mode was demonstrated. Based on these developments, two integrated steady-state operation scenarios were developed in JT-60, which are reversed magnetic shear (R/S) plasmas and high bp ELMy H-mode. In these operation regimes, discharges have been sustained near the steady-state current profile under full non-inductive current drive. High performance plasmas with a high nDotETio and at high normalized density were also produced under fully non-inductive condition in high bp ELMy H-mode and R/S mode.
Ikeda, Yoshitaka; Kasugai, Atsushi; Takahashi, Koji; Kajiwara, Ken; Isayama, Akihiko; Ide, Shunsuke; Terakado, Masayuki; Shinozaki, Shinichi; Yokokura, Kenji; Anno, Katsuto; et al.
Fusion Engineering and Design, 53(1-4), p.351 - 363, 2001/01
Times Cited Count：40 Percentile：92.09(Nuclear Science & Technology)no abstracts in English
La isotopesYamamoto, Hiroshi*; Shibata, Michihiro*; Kawade, Kiyoshi*; Kojima, Yasuaki*; Osa, Akihiko; Watanabe, Satoshi; Koizumi, Mitsuo; Sekine, Toshiaki
JAERI-Review 99-025, TIARA Annual Report 1998, p.208 - 210, 1999/10
no abstracts in English
Ikeda, Yoshitaka; Fujita, Takaaki; Hamamatsu, Kiyotaka; Ide, Shunsuke; Imai, Tsuyoshi; Isayama, Akihiko; Iwase, Makoto; Kasugai, Atsushi; Kondoh, Takashi; Kusama, Yoshinori; et al.
AIP Conference Proceedings 485, p.279 - 287, 1999/09
no abstracts in English
Sekine, Toshiaki; Ichikawa, Shinichi; Osa, Akihiko; Koizumi, Mitsuo; Iimura, Hideki; Tsukada, Kazuaki; Nishinaka, Ichiro; Hatsukawa, Yuichi; Nagame, Yuichiro; Asai, Masato*; et al.
Journal of Radioanalytical and Nuclear Chemistry, 239(1), p.127 - 131, 1999/00
Times Cited Count：2 Percentile：21.16(Chemistry, Analytical)no abstracts in English
measurements of 
LaKojima, Yasuaki*; Asai, Masato*; Osa, Akihiko; Koizumi, Mitsuo; Sekine, Toshiaki; Shibata, M.*; *; Kawade, Kiyoshi*; Tachibana, Takahiro*
Journal of the Physical Society of Japan, 67(10), p.3405 - 3413, 1998/10
Times Cited Count：10 Percentile：58.58(Physics, Multidisciplinary)no abstracts in English
-values of 
La isomersKojima, Yasuaki*; Asai, Masato*; Osa, Akihiko; Koizumi, Mitsuo; Sekine, Toshiaki; Shibata, M.*; *; Kawade, Kiyoshi*
Applied Radiation and Isotopes, 49(7), p.829 - 834, 1998/00
Times Cited Count：4 Percentile：38.63(Chemistry, Inorganic & Nuclear)no abstracts in English
states in neutron-deficient Ba nucleiAsai, Masato*; Sekine, Toshiaki; Osa, Akihiko; Koizumi, Mitsuo; Kojima, Yasuaki*; Shibata, M.*; *; Kawade, Kiyoshi*
Physical Review C, 56(6), p.3045 - 3053, 1997/12
Times Cited Count：22 Percentile：74.54(Physics, Nuclear)no abstracts in English
Osa, Akihiko; Koizumi, Mitsuo; Sekine, Toshiaki; Yamamoto, Hiroshi*; *; *; *
"Fuanteikaku No Rikogaku Oyobi Kaku Keisokuho(II)" Ni Kansuru Semmon Kenkyukai Hokokusho, 0, p.28 - 30, 1997/00
no abstracts in English
states in BaAsai, Masato*; *; Osa, Akihiko; Koizumi, Mitsuo; Sekine, Toshiaki; *; Yamamoto, Hiroshi*; Kawade, Kiyoshi*
"Fuanteikaku No Rikogaku Oyobi Kaku Keisokuho(II)" Ni Kansuru Semmon Kenkyukai Hokokusho, 0, p.97 - 100, 1997/00
no abstracts in English
- angular correlation measurements for mass-separated short-lived nucleiAsai, Masato*; Kawade, Kiyoshi*; *; Osa, Akihiko; Koizumi, Mitsuo; Sekine, Toshiaki
Nuclear Instruments and Methods in Physics Research A, 398, p.265 - 275, 1997/00
Times Cited Count：6 Percentile：50.07(Instruments & Instrumentation)no abstracts in English
