Publications by authors named "T Aniel"
Convective velocity reversal caused by turbulence transition in tokamak plasma.
Phys Rev Lett
December 2013
Article Synopsis
- Particle transport in the Tore Supra tokamak involved using ion cyclotron resonance heating to create density and temperature changes.
- Observations revealed that when a specific mixed critical gradient was exceeded, particle flux significantly increased, and the direction of particle convective velocity reversed.
- These findings align with theoretical predictions, indicating a shift from an instability driven by ion temperature to one influenced by trapped electrons.
Experimental determination of critical threshold in electron transport on Tore Supra.
Phys Rev Lett
September 2001
In Tore Supra plasmas with fast wave electron heating, a critical threshold in the electron temperature gradient (inverted DeltaT(e)) is clearly observed, i.e., a finite value of inverted DeltaT(e) for which the turbulent heat diffusivity vanishes.
View Article and Find Full Text PDFRecently, reversed magnetic shear operation was performed using only ion-cyclotron-resonance frequency minority heating (ICRH) during current ramp-up. A wide region of reversed magnetic shear has been obtained. For the first time, an electron internal transport barrier sustained by ICRH is observed, with a dramatical drop of density fluctuations.
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