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 20m/s, has been found. Both results are consistent with gyrokinetic simulations. This evidence is complemented in plasmas with internal transport barriers. © 2009 The American Physical Society.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Tala, T., Zastrow, K-D., Ferreira, J., Mantica, P., Naulin, V., Peeters, A. G., ... Strintzi, D. (2009). Evidence of inward toroidal momentum convection in the JET tokamak. Physical Review Letters, 102(7), -. . https://doi.org/10.1103/PhysRevLett.102.075001