Geodesic Acoustic Mode

Revision as of 11:05, 15 July 2014 by Admin (talk | contribs) (Created page with "The Geodesic Acoustic Mode (GAM) is a plasma oscillation occurring in toroidal confinement devices with the following properties: <ref>N. Winsor, J.L. Johnson and J.M. Dawson,...")

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

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:

f_{GAM}\sim (1+1/2q^{2}){\frac {\sqrt {(T_{e}+T_{i})/M_{i}}}{2\pi R}}

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

Retrieved from "http://wiki.fusenet.eu/fusionwiki/index.php?title=Geodesic_Acoustic_Mode&oldid=4687"