Effects of the Second Harmonic on the GAM in Electron Scale Turbulence
Conference poster, 2013
The effects higher order harmonics have been self-consistently included
in the derivation of the electron branch of the electron Geodesic Acoustic Mode (el-
GAM) in an Electron-Temperature-Gradient (ETG) turbulence background. The work
is based on a two-fluid model including finite β-effects while retaining non-adiabatic
ions. In solving the linear dispersion relation, it is found that the due to the coupling
to the m = 2 mode the real frequency may be significantly altered and yield higher
values.
Transport
GAMs
Turbulence
Zonal Flows