Short Wavelength Geodesic Acoustic Mode Excitation by Energetic Particles
Plasma Physics
2018-02-14 v1
Abstract
Taking the collisionless damping of geodesic acoustic mode (GAM) as an example, the physics processes underlying wave particle resonances in the short wavelength limit are clarified. As illus- trative application, GAM excitation by energetic particles in short wavelength limit is investigated assuming a single pitch angle slowing-down fast ion equilibrium distribution function. Conditions for this energetic particle-induced GAM (EGAM) to be unstable are discussed.
Keywords
Cite
@article{arxiv.1709.02085,
title = {Short Wavelength Geodesic Acoustic Mode Excitation by Energetic Particles},
author = {Liu Chen and Zhiyong Qiu and Fulvio Zonca},
journal= {arXiv preprint arXiv:1709.02085},
year = {2018}
}
Comments
4 pages, 2 figures. submitted to Physics of Plasmas