Long-wavelength density turbulence in the TFTR tokamak

R. J. Fonck, G. Cosby, R. D. Durst, S. F. Paul, N. Bretz, S. Scott, E. Synakowski, G. Taylor

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Abstract

Long-wavelength ρi<1) density turbulence has been measured with good spatial localization in the core region of a high temperature tokamak plasma with auxiliary heating. Density fluctuations of n/n>0.5% exist for k<2 cm-1 with radial and poloidal correlation lengths typically 1-2.5 cm in the confinement region, corresponding to kρi0.1-0.3. An anisotropic wave-number spectrum is observed, and estimates of the turbulence-driven transport are comparable to the anomalous transport observed in tokamaks.

Original languageEnglish
Pages (from-to)3736-3739
Number of pages4
JournalPhysical Review Letters
Volume70
Issue number24
DOIs
StatePublished - 1993

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