The nonlinear dispersion relation of geodesic acoustic modes

Details The nonlinear dispersion relation of geodesic acoustic modes The nonlinear dispersion relation of geodesic acoustic modes

2011-09-15

arxiv.org/abs/1109.3324v1

Physics

Plasma Physics

This article has been submitted to Physical Review Letters. When published, it will be available at http://prl.aps.org/

Scientific paper

The energy input and frequency shift of geodesic acoustic modes (GAMs) due to turbulence in tokamak edge plasmas are investigated in numerical two-fluid turbulence studies. Surprisingly, the turbulent GAM dispersion relation is qualitatively equivalent to the linear GAM dispersion but can have drastically enhanced group velocities. In up-down asymmetric geometry the energy input due to turbulent transport may favor the excitation of GAMs with one particular sign of the radial phase velocity relative to the magnetic drifts and may lead to pulsed GAM activity.

Affiliated with

Also associated with

No associations

Rating

The nonlinear dispersion relation of geodesic acoustic modes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The nonlinear dispersion relation of geodesic acoustic modes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The nonlinear dispersion relation of geodesic acoustic modes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-673398