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Probing internal transport barriers with heat pulses in JET. | LitMetric
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Probing internal transport barriers with heat pulses in JET.

P Mantica D Van Eester X Garbet F Imbeaux L Laborde M Mantsinen A Marinoni D Mazon D Moreau N Hawkes E Joffrin V Kiptily S Pinches A Salmi S Sharapov A Thyagaraja I Voitsekhovitch P de Vries K-D Zastrow

Phys Rev Lett

Istituto di Fisica del Plasma P.Caldirola, Associazione Euratom-ENEA-CNR, Milano, Italy.

Published: March 2006

The first electron temperature modulation experiments in plasmas characterized by strong and long-lasting electron and ion internal transport barriers (ITB) have been performed in JET using ion cyclotron resonance heating in mode conversion scheme. The ITB is shown to be a well localized narrow layer with low heat diffusivity, characterized by subcritical transport and loss of stiffness. In addition, results from cold pulse propagation experiments suggest a second order transition process for ITB formation.

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http://dx.doi.org/10.1103/PhysRevLett.96.095002DOI Listing

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