The toroidal momentum pinch velocity
| dc.creator | Peeters, A. G. | |
| dc.creator | Angioni, C. | |
| dc.creator | Strintzi, D. | |
| dc.date | 2007-01-12 | |
| dc.date.accessioned | 2026-07-07T07:40:40Z | |
| dc.date.available | 2026-07-07T07:40:40Z | |
| dc.description | In this letter a pinch velocity of toroidal momentum is shown to exist for the first time. Using the gyro-kinetic equations in the frame moving with the equilibrium toroidal velocity, it is shown that the physics effect can be elegantly formulated through the ``Coriolis'' drift. A fluid model is used to highlight the main coupling mechanisms between the density and temperature perturbations on the one hand and the perturbed parallel flow on the other. Gyro-kinetic calculations are used to accurately asses the magnitude of the pinch. The pinch velocity leads to a radial gradient of the toroidal velocity profile even in the absence of a torque on the plasma. It is shown to be sizeable in the plasmas of the International Thermonuclear Experimental Reactor (ITER) leading to a moderately peaked rotation profile. Finally, the pinch also affects the interpretation of current experiments. | |
| dc.description | 4 Pages, 2 Figures. Submitted to Phys. Rev. Letters on the 17th of Nov. 2006 | |
| dc.identifier | https://arxiv.org/abs/physics/0701147 | |
| dc.identifier | http://arxiv.org/abs/physics/0701147 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/121843 | |
| dc.subject | Plasma Physics | |
| dc.title | The toroidal momentum pinch velocity | |
| dc.type | text |