Geodesic Acoustic Mode: Difference between revisions
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Revision as of 12:05, 15 July 2014
The Geodesic Acoustic Mode (GAM) is a plasma oscillation occurring in toroidal confinement devices with the following properties: [1] [2]
- Redially localized
- Axisymmetric (n=0)
- Poloidally symmetric potential (m=0) and asymmetric density (m=1) perturbations
The GAM frequency is, approximately:
References
- ↑ N. Winsor, J.L. Johnson and J.M. Dawson, Geodesic Acoustic Waves in Hydromagnetic Systems, Phys. Fluids 11 (1968) 2448
- ↑ K.J. Zhao et al., Toroidal Symmetry of the Geodesic Acoustic Mode Zonal Flow in a Tokamak Plasma, Phys. Rev. Lett. 96 (2006) 255004