| Title | Nonlinear Stabilization of Tokamak Microturbulence by Fast Ions |
| Publication Type | Journal Article |
| Year of Publication | 2013 |
| Authors | J. Citrin, F. Jenko, P. Mantica, D. Told, C. Bourdelle, J. Garcia, J.W Haverkort, G.MD Hogeweij, T. Johnson, M.J Pueschel |
| Journal | Physical Review Letters |
| Volume | 111 |
| Pagination | 155001 |
| Date Published | Oct |
| Abstract | Nonlinear electromagnetic stabilization by suprathermal pressure gradients found in specific regimes is shown to be a key factor in reducing tokamak microturbulence, augmenting significantly the thermal pressure electromagnetic stabilization. Based on nonlinear gyrokinetic simulations investigating a set of ion heat transport experiments on the JET tokamak, described by Mantica et al. [ Phys. Rev. Lett. 107 135004 (2011)], this result explains the experimentally observed ion heat flux and stiffness reduction. These findings are expected to improve the extrapolation of advanced tokamak scenarios to reactor relevant regimes. |
| DOI | 10.1103/PhysRevLett.111.155001 |
| Division | FP |
| Department | CPP-HT |
| PID | b79552ae74a4f49813ab40d1fa18d6b3 |
| Alternate Title | Phys. Rev. Lett. |
| Label | OA |
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