Fast Chirping Event during Global Gyrokinetic Particle Simulations of the Toroidicity Induced Alfven Eigenmode

Details Fast Chirping Event during Global Gyrokinetic Particle Simulations of the Toroidicity Induced Alfven Eigenmode Fast Chirping Event during Global Gyrokinetic Particle Simulations of the Toroidicity Induced Alfven Eigenmode

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..apr.k1007z&link_type=abstract

American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #K1.007

Physics

Scientific paper

Fast chirping event is observed in the nonlinear large scale gyrokinetic particle simulations for the toroidicity induced Alfven eigenmode (TAE) in the absence of external source and dissipation. It is found that the energetic particle drives the chirping through nonlinear kinetic effects while the nonlinear kinetic effect of thermal ions is the key to saturate the turbulence. Simulation result shows that the dynamical evolution of coherent structure in energetic particle phase space induces the TAE chirping.

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