Abstract
Experiments have been carried out on the Joint European Torus tokamak to determine the diffusive and convective momentum transport. Torque, injected by neutral beams, was modulated to create a periodic perturbation in the toroidal rotation velocity. Novel transport analysis shows the magnitude and profile shape of the momentum diffusivity are similar to those of the ion heat diffusivity. A significant inward momentum pinch, up to 20 m/s, has been found. Both results are consistent with gyrokinetic simulations. This evidence is complemented in plasmas with internal transport barriers.
Original language | English |
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Journal | Physical Review Letters |
Volume | 102 |
Issue number | 7 |
Pages (from-to) | 075001 |
ISSN | 0031-9007 |
DOIs | |
Publication status | Published - 2009 |
Bibliographical note
Copyright (2009) by the American Physical Society.Keywords
- Fusion energy