On the dynamics of vortex modes within magnetic islands

Physics – Plasma Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0


Scientific paper

Recent work investigating the interaction of magnetic islands with micro-turbulence has uncovered the striking observation of large scale vortex modes forming within the island structure [W.A. Hornsby {\it et al.}, Phys. Plasmas {\bf 17} 092301 (2010)]. These electrostatic vortices are found to be the size of the island and are oscillatory. It is this oscillatory behaviour and the presence of turbulence that leads us to believe that the dynamics are related to the Geodesic Acoustic Mode (GAM), and it is this link that is investigated in this paper. Here we derive an equation for the GAM in the MHD limit, in the presence of a magnetic island modified three-dimensional axisymmetric geometry. The eigenvalues and eigenfunctions are calculated numerically and then utilised to analyse the dynamics of oscillatory large-scale electrostatic potential structures seen in both linear and non-linear gyro-kinetic simulations.

No associations


Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.


On the dynamics of vortex modes within magnetic islands 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 On the dynamics of vortex modes within magnetic islands, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the dynamics of vortex modes within magnetic islands will most certainly appreciate the feedback.

Rate now


Profile ID: LFWR-SCP-O-174321

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.