Probing Internal Transport Barriers with Heat Pulses in JET
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.
Bibliographic Reference: An article published in: Phys. Rev. Lett. 96, 095002 (2006)
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/doi:10.1103/PhysRevLett.96.095002
Record Number: 200719147 / Last updated on: 2007-05-21
Original language: en
Available languages: en