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Author Miura, Y. ♦ Okano, F. ♦ Suzuki, N. ♦ Mori, M. ♦ Hoshino, K. ♦ Takizuka, T. ♦ Itoh, K. ♦ Itoh, S.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION ♦ JET TOKAMAK ♦ TRANSIENTS ♦ SAWTOOTH OSCILLATIONS ♦ THERMAL DIFFUSIVITY ♦ THERMAL CONDUCTIVITY ♦ TIME-OF-FLIGHT METHOD ♦ HYDROGEN ♦ PLASMA DISRUPTION ♦ PLASMA DIAGNOSTICS
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, {chi}{sub {ital i}}{sup HP}, of about (7{endash}18) m{sup 2}/s is evaluated for the low confinement mode (L-mode) plasma. The simple diffusive model with constant {chi}{sub {ital i}}{sup HP}, however, does not explain the amplitude of the pulse in the ion energy distribution. {copyright} {ital 1996 American Institute of Physics.}
ISSN 1070664X
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-10-01
Publisher Place United States
Journal Physics of Plasmas
Volume Number 3
Issue Number 10


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