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Journal Articles

Magnetic island evolution in rotating plasmas

Ishii, Yasutomo; Azumi, Masafumi*; Smolyakov, A. I.*

Journal of Plasma Physics, 72(6), p.1243 - 1248, 2006/12

 Times Cited Count:1 Percentile:3.54(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Monte-Carlo simulation of electron cyclotron current drive in NTM magnetic islands

Hamamatsu, Kiyotaka; Takizuka, Tomonori; Hayashi, Nobuhiko; Ozeki, Takahisa

Europhysics Conference Abstracts (CD-ROM), 29C, 4 Pages, 2005/00

no abstracts in English

Journal Articles

Direct evaluation of spatio-temporal change in current density profile applied to a discharge with neo-classical tearing mode

Suzuki, Takahiro; Oikawa, Toshihiro; Isayama, Akihiko; Fujita, Takaaki

Purazuma, Kaku Yugo Gakkai-Shi, 80(5), p.362 - 363, 2004/05

An analytical method to evaluate spatio-temporal change in current density profile directly from the motional Stark effect (MSE) diagnostic is applied to a discharge, where a neo-classical tearing mode (NTM) appeared and was stabilized by electron cyclotron current drive (ECCD). The analysis clearly shows spatially localized decrease in current density at the magnetic island location, implying decrease in bootstrap current due to flattening of pressure profile within the island. When the NTM is stabilized after the start of the ECCD application, increase in current density at the island location is observed.

Journal Articles

Achievement of high fusion triple product, steady-state sustainment and real-time NTM stabilization in high-$$beta_p$$ ELMy H-mode discharges in JT-60U

Isayama, Akihiko; Kamada, Yutaka; Hayashi, Nobuhiko; Suzuki, Takahiro; Oikawa, Toshihiro; Fujita, Takaaki; Fukuda, Takeshi; Ide, Shunsuke; Takenaga, Hidenobu; Ushigusa, Kenkichi; et al.

Nuclear Fusion, 43(10), p.1272 - 1278, 2003/10

 Times Cited Count:131 Percentile:95.64(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Electron temperature perturbations measured by electron cyclotron emission diagnostic systems in JT-60U

Isayama, Akihiko; Isei, Nobuaki; Ishida, Shinichi; Sato, Masayasu; Kamada, Yutaka; Ide, Shunsuke; Ikeda, Yoshitaka; Takahashi, Koji; Kajiwara, Ken; Hamamatsu, Kiyotaka; et al.

Fusion Engineering and Design, 53(1-4), p.129 - 135, 2001/01

 Times Cited Count:12 Percentile:64.65(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Measurement of magnetic island width in long-pulse,high $$beta$$$$_{N}$$ discharges in JT-60U

Isayama, Akihiko; Kamada, Yutaka; Ozeki, Takahisa; Isei, Nobuaki

Plasma Physics and Controlled Fusion, 41(1), p.35 - 43, 1999/00

 Times Cited Count:52 Percentile:81.74(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Detailed profile of M=2 islands with TVTS on JFT-2M

Yamauchi, Toshihiko; B.Grek*; Hoshino, Katsumichi; B.Leblanc*; D.Johnson*; J.Felt*; ; ; *;

Physics Letters A, 223(3), p.179 - 185, 1996/00

 Times Cited Count:6 Percentile:53.11(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Effect of local heating on the m=2 tearing mode in a tokamak

; ; Azumi, Masafumi; Takizuka, Tomonori; Takeda, Tatsuoki

Nuclear Fusion, 34(11), p.1497 - 1515, 1994/00

 Times Cited Count:39 Percentile:75.47(Physics, Fluids & Plasmas)

no abstracts in English

JAEA Reports

Simulation of tearing mode stabilization by using ECH

; ; Azumi, Masafumi; Takeda, Tatsuoki

JAERI-M 93-224, 34 Pages, 1993/11

JAERI-M-93-224.pdf:1.13MB

no abstracts in English

JAEA Reports

Analysis of stochastic particle behavior in a magnetic island due to electrostatic drift waves

Nishimura, Yasutaro*; Azumi, Masafumi; Yagi, Masatoshi; Hamamatsu, Kiyotaka; Tani, Keiji; Okada, Shigefumi*; *

JAERI-M 93-140, 53 Pages, 1993/07

JAERI-M-93-140.pdf:1.51MB

no abstracts in English

JAEA Reports

Toroidal Ripple and Error Field of JT-60 Toroidal Field Coils

; Okubo, Minoru; ; ; *

JAERI-M 7846, 35 Pages, 1978/09

JAERI-M-7846.pdf:1.03MB

no abstracts in English

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