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Start Over Author "Iguchi, H." Journal plasma physics and controlled fusion
21 results on '"Iguchi, H."'

1. Spectrograph of electric field fluctuation in toroidal helical plasma

Author

Fujisawa, A, Itoh, K, Shimizu, A, Nakano, H, Ohsima, S, Iguchi, H, Matsuoka, K, Okamura, S, Itoh, S-I, and Diamond, PH

Subjects
Atomic, Molecular, Nuclear, Particle and Plasma Physics, Other Physical Sciences, Fluids & Plasmas
Abstract

This is a report on fluctuation measurements using twin heavy ion beam probes in CHS. The observation shows that dozens of coherent modes with intermittent nature co-exist in an electron cyclotron heated plasma. The modes are found to have a long-distance correlation in the toroidal direction. The radial structure of the modes is evaluated in potential fluctuation. The characteristics are consistent with those of the geodesic acoustic modes. © 2006 IOP Publishing Ltd.

Published
2006

2. Zonal flow driven by energetic particle during magneto-hydro-dynamic burst in a toroidal plasma

Author

Ohshima, S, primary, Fujisawa, A, additional, Shimizu, A, additional, Nakano, H, additional, Iguchi, H, additional, Yoshimura, Y, additional, Nagaoka, K, additional, Minami, T, additional, Isobe, M, additional, Nishimura, S, additional, Suzuki, C, additional, Akiyama, T, additional, Takahashi, C, additional, Takeuchi, M, additional, Ito, T, additional, Watari, T, additional, Kumazawa, R, additional, Itoh, S-I, additional, Itoh, K, additional, Matsuoka, K, additional, and Okamura, S, additional

Published
2007
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3. Intermittent characteristics in coupling between turbulence and zonal flows

Author

Fujisawa, A, primary, Shimizu, A, additional, Nakano, H, additional, Ohshima, S, additional, Itoh, K, additional, Nagashima, Y, additional, Itoh, S-I, additional, Iguchi, H, additional, Yoshimura, Y, additional, Minami, T, additional, Nagaoka, K, additional, Takahashi, C, additional, Kojima, M, additional, Nishimura, S, additional, Isobe, M, additional, Suzuki, C, additional, Akiyama, T, additional, Ido, T, additional, Matsuoka, K, additional, Okamura, S, additional, and Diamond, P H, additional

Published
2007
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4. Turbulence and transport characteristics of a barrier in a toroidal plasma

Author

Fujisawa, A, primary, Shimizu, A, additional, Nakano, H, additional, Ohsima, S, additional, Itoh, K, additional, Iguchi, H, additional, Yoshimura, Y, additional, Minami, T, additional, Nagaoka, K, additional, Takahashi, C, additional, Kojima, M, additional, Nishimura, S, additional, Isobe, M, additional, Suzuki, C, additional, Akiyama, T, additional, Nagashima, Y, additional, Ida, K, additional, Toi, K, additional, Ido, T, additional, Itoh, S-I, additional, Matsuoka, K, additional, Okamura, S, additional, and Diamond, P H, additional

Published
2006
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5. Formation of neoclassical internal transport barriers under various operational regimes on compact helical system

Author

Minami, T, primary, Fujisawa, A, additional, Iguchi, H, additional, Nishimura, S, additional, Ida, K, additional, Yokoyama, M, additional, Murakami, S, additional, Yoshimura, Y, additional, Isobe, M, additional, Suzuki, C, additional, Nagaoka, K, additional, Akiyama, T, additional, Yoshinuma, M, additional, Shimizu, A, additional, Takahashi, C, additional, Matsuoka, K, additional, Okamura, S, additional, and group, CHS, additional

Published
2004
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6. Edge transport barrier formation in compact helical system

Author

Okamura, S, primary, Minami, T, additional, Oishi, T, additional, Suzuki, C, additional, Ida, K, additional, Isobe, M, additional, Yoshimura, Y, additional, Nagaoka, K, additional, Toi, K, additional, Fujisawa, A, additional, Akiyama, T, additional, Iguchi, H, additional, Ikeda, R, additional, Kado, S, additional, Matsuoka, K, additional, Matsushita, H, additional, Nakamura, K, additional, Nakano, H, additional, Nishimura, S, additional, Nishiura, M, additional, Ohshima, S, additional, Shimizu, A, additional, Takagi, S, additional, Takahashi, C, additional, Takeuchi, M, additional, and Yoshinuma, M, additional

Published
2004
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7. Recent diagnostic developments on LHD

Author

Sudo, S, primary, Nagayama, Y, additional, Peterson, B J, additional, Kawahata, K, additional, Akiyama, T, additional, Ashikawa, N, additional, Emoto, M, additional, Goto, M, additional, Hamada, Y, additional, Ida, K, additional, Ido, T, additional, Iguchi, H, additional, Inagaki, S, additional, Isobe, M, additional, Kobuchi, T, additional, Komori, A, additional, Liang, Y, additional, Masuzaki, S, additional, Minami, T, additional, Morisaki, T, additional, Morita, S, additional, Muto, S, additional, Nakamura, Y, additional, Nakanishi, H, additional, Narushima, M, additional, Narihara, K, additional, Nishiura, M, additional, Nishizawa, A, additional, Ohdachi, S, additional, Osakabe, M, additional, Ozaki, T, additional, Pavlichenko, R O, additional, Sakakibara, S, additional, Sato, K, additional, Shoji, M, additional, Tamura, N, additional, Tanaka, K, additional, Toi, K, additional, Tokuzawa, T, additional, Watanabe, K Y, additional, Watanabe, T, additional, Yamada, H, additional, Yamada, I, additional, Yoshinuma, M, additional, Goncharov, P, additional, Kalinina, D, additional, Kanaba, T, additional, Sugimoto, T, additional, Ejiri, A, additional, Ono, Y, additional, Hojo, H, additional, Ishii, K, additional, Iwama, N, additional, Kogi, Y, additional, Mase, A, additional, Sakamoto, M, additional, Kondo, K, additional, Nagasaki, H, additional, Yamamoto, S, additional, Nishino, N, additional, Okajima, S, additional, Saida, T, additional, Sasao, M, additional, Takeda, T, additional, Tsuji-Iio, S, additional, Darrow, D S, additional, Takahashi, H, additional, Liu, Y, additional, Lyon, J F, additional, Kostrioukov, A Yu, additional, Kuteev, V B, additional, Sergeev, V, additional, Viniar, I, additional, Krasilnikov, A V, additional, Sanin, A, additional, Vyacheslavov, L N, additional, Stutman, D, additional, Finkenthal, M, additional, Motojima, O, additional, and Group, LHD, additional

Published
2003
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8. Bootstrap current analysis for neoclassical internal transport barrier discharge of CHS

Author

Isobe, M, primary, Nakajima, N, additional, Ida, K, additional, Minami, T, additional, Yoshimura, Y, additional, Fujisawa, A, additional, Shimizu, A, additional, Murakami, S, additional, Nishimura, S, additional, Suzuki, C, additional, Nomura, I, additional, Osakabe, M, additional, Toi, K, additional, Iguchi, H, additional, Takahashi, C, additional, Okamura, S, additional, Matsuoka, K, additional, and group, CHS, additional

Published
2002
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9. Transport of the plasma with neoclassical internal transport barrier on CHS

Author

Minami, T, primary, Fujisawa, A, additional, Iguchi, H, additional, Murakami, S, additional, Yokoyama, M, additional, Yoshimura, Y, additional, Isobe, M, additional, Nishimura, S, additional, Suzuki, C, additional, Nomura, I, additional, Ida, K, additional, Matsuoka, K, additional, Okamura, S, additional, Takahashi, C, additional, and Group, CHS, additional

Published
2002
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10. Observation of flow reversal in plasmas with a neoclassical internal transport barrier in CHS

Author

Ida, K, primary, Minami, T, additional, Yoshimura, Y, additional, Fujisawa, A, additional, Suzuki, C, additional, Yokoyama, M, additional, Murakami, S, additional, Okamura, S, additional, Nishimura, S, additional, Isobe, M, additional, Iguchi, H, additional, Itoh, K, additional, Kado, S, additional, Liang, Y, additional, Nomura, I, additional, Osakabe, M, additional, Takahashi, C, additional, Tanaka, K, additional, and Matsuoka, K, additional

Published
2002
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11. Overview of CHS experiments4

Author

Matsuoka, K, primary, Akiyama, R, additional, Fujisawa, A, additional, Ida, K, additional, Iguchi, H, additional, Isobe, M, additional, Kado, S, additional, Khlopenkov, K, additional, Kondo, T, additional, Liang, Y, additional, Matsunaga, G, additional, Minami, T, additional, Nishimura, S, additional, Nomura, I, additional, Ohkuni, K, additional, Okamura, S, additional, Osakabe, M, additional, Pavlichenko, R, additional, Sasao, M, additional, Shimizu, A, additional, Sudo, S, additional, Suzuki, C, additional, Takahashi, C, additional, Takagi, S, additional, Takechi, M, additional, Tanaka, K, additional, Toi, K, additional, Yamamoto, T, additional, and Yoshimura, Y, additional

Published
2000
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13. Electric pulsation and profile quantization in CHS heliotron/torsatron

Author

Fujisawa, A, primary, Iguchi, H, additional, Idei, H, additional, Kubo, S, additional, Matsuoka, K, additional, Okamura, S, additional, Tanaka, K, additional, Minami, T, additional, Ohdachi, S, additional, Morita, S, additional, Zushi, H, additional, Lee, S, additional, Osakabe, M, additional, Akiyama, R, additional, Yoshimura, Y, additional, Toi, K, additional, Sanuki, H, additional, Itoh, K, additional, Shimizu, A, additional, Takagi, S, additional, Ejiri, A, additional, Takahashi, C, additional, Kojima, M, additional, Hidekuma, S, additional, Ida, K, additional, Nishimura, S, additional, Isobe, M, additional, Inoue, N, additional, Sakamoto, R, additional, Itoh, S-I, additional, Hamada, Y, additional, and Fujiwara, M, additional

Published
1999
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15. Transition behaviour in the H-mode of the CHS heliotron/torsatron

Author

Toi, K, primary, Ohdachi, S, additional, Morisaki, T, additional, Sakakibara, S, additional, Morita, S, additional, Minami, T, additional, Tanaka, K, additional, Yamada, H, additional, Okamura, S, additional, Nishimura, K, additional, Matsuoka, K, additional, Yamada, I, additional, Akiyama, R, additional, Ando, A, additional, Ejiri, A, additional, Ida, K, additional, Idei, H, additional, Iguchi, H, additional, Komori, A, additional, Kubo, S, additional, Narihara, K, additional, Ozaki, T, additional, Takahashi, C, additional, Tsumori, K, additional, and Xu, J, additional

Published
1996
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17. Measurement of profiles of the space potential in JIPP T-IIU tokamak plasmas by slow poloidal and fast toroidal sweeps of a heavy ion beam

Author

Hamada, Y, primary, Nishizawa, A, additional, Kawasumi, Y, additional, Narihara, K, additional, Sato, K, additional, Seki, T, additional, Toi, K, additional, Iguchi, H, additional, Fujisawa, A, additional, Adachi, K, additional, Ejiri, A, additional, Hidekuma, S, additional, Hirokura, S, additional, Ida, K, additional, Koong, J, additional, Kawahata, K, additional, Kojima, M, additional, Kumazawa, R, additional, Huramoto, H, additional, Liang, R, additional, Sakakita, H, additional, Sasao, M, additional, Sato, K N, additional, Tsuzuki, T, additional, Xu, J, additional, Yamada, I, additional, Watari, T, additional, and Negi, I, additional

Published
1994
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18. H-mode transition in the CHS heliotron/torsatron

Author

Toi, K, primary, Akiyama, R, additional, Arimoto, H, additional, Ejiri, A, additional, Ida, K, additional, Idei, H, additional, Iguchi, H, additional, Kaneko, O, additional, Kawahata, K, additional, Komori, A, additional, Kubo, S, additional, Matsuoka, K, additional, Morisaki, T, additional, Morita, S, additional, Nishimura, K, additional, Okamura, S, additional, Sagara, A, additional, Sakakibara, S, additional, Takahashi, C, additional, Takita, Y, additional, Tanaka, K, additional, Tsumori, K, additional, Xu, J, additional, Yamada, H, additional, and Yamada, I, additional

Published
1994
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20. Results from the CHS device

Author

Matsuoka, K, primary, Yamada, H, additional, Iguchi, H, additional, Ida, K, additional, Morita, S, additional, Okamura, S, additional, Nishimura, K, additional, Sanuki, H, additional, Itoh, K, additional, Akiyama, R, additional, Arimoto, H, additional, Hanatani, K, additional, Hosokawa, M, additional, Idei, H, additional, Kaneko, O, additional, Kubo, S, additional, Kumazawa, R, additional, Ozaki, T, additional, Sagara, A, additional, Sakakibara, S, additional, Takahashi, C, additional, Takeiri, Y, additional, Takita, Y, additional, Toi, K, additional, Tsumori, K, additional, Ueda, M, additional, Yamada, I, additional, Watari, T, additional, and Fujiwara, M, additional

Published
1992
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21. Properties of turbulence and stationary zonal flow on transport barrier in CHS

Author

Fujisawa, A, Shimizu, A, Nakano, H, Ohsima, S, Itoh, K, Iguchi, H, Matsuoka, K, Okamura, S, Itoh, S-I, and Diamond, P H

Abstract

Spectral changes in electric field fluctuation are measured using twin heavy ion beam probes in compact helical system (CHS) before and after an internal transport barrier is broken down. Wavelet analysis reveals intermittent behaviour of the fluctuations and a significant correlation between fluctuation powers of the low (2.5 < f< 10?kHz) and high (30 < f< 250?kHz) ranges. The high frequency (turbulence) fluctuation increases with a decrease in the low frequency fluctuation after the back-transition. The change in the power distribution between these two frequency ranges may contribute to the improved transport on the barrier.

Published
2006
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