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Center for Nonlinear Studies |
Global particle-in-cell simulation code has been developed in the ideal dipole geometry, and successfully verified against the shear Alfv\'{e}n wave, ion acoustic wave, and the drift compressional mode. For the drift compressional mode, gyrokinetic simulations were performed to investigate the effects of the finite Larmor radius on the frequency and growth rate. Global simulations were also conducted to resolve the structure of the perturbation along the equilibrium magnetic field. A numerical scheme has been developed for gyrokinetic simulations of low frequency compressional modes, and is currently being implemented to study the radial structure of the drift compressional modes.
Host: Xianzhu Tang, xtang@lanl.gov