Properties of turbulence and stationary zonal flow on transport barrier in CHS

A. Fujisawa; A. Shimizu; H. Nakano; S. Ohsima; K. Itoh; H. Iguchi; K. Matsuoka; S. Okamura; S. I. Itoh; P. H. Diamond

doi:10.1088/0741-3335/48/5A/S36

Properties of turbulence and stationary zonal flow on transport barrier in CHS

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

核融合力学部門

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

20 被引用数 (Scopus)

抄録

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.

本文言語	英語
ページ（範囲）	A365-A370
ジャーナル	Plasma Physics and Controlled Fusion
巻	48
号	5 A
DOI	https://doi.org/10.1088/0741-3335/48/5A/S36
出版ステータス	出版済み - 5月 2006

!!!All Science Journal Classification (ASJC) codes

原子力エネルギーおよび原子力工学
凝縮系物理学

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title = "Properties of turbulence and stationary zonal flow on transport barrier in CHS",

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.",

author = "A. Fujisawa and A. Shimizu and H. Nakano and S. Ohsima and K. Itoh and H. Iguchi and K. Matsuoka and S. Okamura and Itoh, {S. I.} and Diamond, {P. H.}",

year = "2006",

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doi = "10.1088/0741-3335/48/5A/S36",

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TY - JOUR

T1 - Properties of turbulence and stationary zonal flow on transport barrier in CHS

AU - Fujisawa, A.

AU - Shimizu, A.

AU - Nakano, H.

AU - Ohsima, S.

AU - Itoh, K.

AU - Iguchi, H.

AU - Matsuoka, K.

AU - Okamura, S.

AU - Itoh, S. I.

AU - Diamond, P. H.

PY - 2006/5

Y1 - 2006/5

N2 - 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.

AB - 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.

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U2 - 10.1088/0741-3335/48/5A/S36

DO - 10.1088/0741-3335/48/5A/S36

M3 - Article

AN - SCOPUS:33845810021

SN - 0741-3335

VL - 48

SP - A365-A370

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 5 A

ER -

Properties of turbulence and stationary zonal flow on transport barrier in CHS

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!!!All Science Journal Classification (ASJC) codes

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