Journal
PHYSICAL REVIEW LETTERS
Volume 102, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.075001
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Funding
- European Communities
- EPSRC [EP/H02395X/1, EP/G003955/1, EP/D062837/1] Funding Source: UKRI
- STFC [ST/F00205X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H02395X/1, EP/D062837/1, EP/G003955/1] Funding Source: researchfish
- Science and Technology Facilities Council [ST/F00205X/1] Funding Source: researchfish
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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.
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