Ion heat pulse after a sawtooth crash in the JAERI Fusion Torus-2M tokamak

Y. Miura; F. Okano; N. Suzuki; M. Mori; K. Hoshino; T. Takizuka; K. Itoh; S. I. Itoh

doi:10.1063/1.872029

Ion heat pulse after a sawtooth crash in the JAERI Fusion Torus-2M tokamak

Y. Miura, F. Okano, N. Suzuki, M. Mori, K. Hoshino, T. Takizuka, K. Itoh, S. I. Itoh

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

The ion heat pulse after a sawtooth crash is studied by a time-of-flight (TOF) neutral measurement. A rapid change of the bulk ion energy distribution near the edge is observed after a sawtooth crash. The delay time is measured, and the effective measuring position is estimated by a neutral transport code. Then a transient ion thermal conductivity, χ_i^HP, of about (7-18) m²/s is evaluated for the low confinement mode (L-mode) plasma. The simple diffusive model with constant χ_i^HP, however, does not explain the amplitude of the pulse in the ion energy distribution.

Original language	English
Pages (from-to)	3696-3700
Number of pages	5
Journal	Physics of Plasmas
Volume	3
Issue number	10
DOIs	https://doi.org/10.1063/1.872029
Publication status	Published - 1996

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1063/1.872029

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abstract = "The ion heat pulse after a sawtooth crash is studied by a time-of-flight (TOF) neutral measurement. A rapid change of the bulk ion energy distribution near the edge is observed after a sawtooth crash. The delay time is measured, and the effective measuring position is estimated by a neutral transport code. Then a transient ion thermal conductivity, χiHP, of about (7-18) m2/s is evaluated for the low confinement mode (L-mode) plasma. The simple diffusive model with constant χiHP, however, does not explain the amplitude of the pulse in the ion energy distribution.",

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T1 - Ion heat pulse after a sawtooth crash in the JAERI Fusion Torus-2M tokamak

AU - Miura, Y.

AU - Okano, F.

AU - Suzuki, N.

AU - Mori, M.

AU - Hoshino, K.

AU - Takizuka, T.

AU - Itoh, K.

AU - Itoh, S. I.

PY - 1996

Y1 - 1996

N2 - The ion heat pulse after a sawtooth crash is studied by a time-of-flight (TOF) neutral measurement. A rapid change of the bulk ion energy distribution near the edge is observed after a sawtooth crash. The delay time is measured, and the effective measuring position is estimated by a neutral transport code. Then a transient ion thermal conductivity, χiHP, of about (7-18) m2/s is evaluated for the low confinement mode (L-mode) plasma. The simple diffusive model with constant χiHP, however, does not explain the amplitude of the pulse in the ion energy distribution.

AB - The ion heat pulse after a sawtooth crash is studied by a time-of-flight (TOF) neutral measurement. A rapid change of the bulk ion energy distribution near the edge is observed after a sawtooth crash. The delay time is measured, and the effective measuring position is estimated by a neutral transport code. Then a transient ion thermal conductivity, χiHP, of about (7-18) m2/s is evaluated for the low confinement mode (L-mode) plasma. The simple diffusive model with constant χiHP, however, does not explain the amplitude of the pulse in the ion energy distribution.

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Ion heat pulse after a sawtooth crash in the JAERI Fusion Torus-2M tokamak

Abstract

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