Verification of long wavelength electromagnetic modes with a gyrokinetic-fluid hybrid model in the XGC code
Abstract
As an alternative option to kinetic electrons, the gyrokinetic total-f particle-in-cell (PIC) code XGC1 has been extended to the MHD/fluid type electromagnetic regime by combining gyrokinetic PIC ions with massless drift-fluid electrons analogous to Chen and Parker, Physics of Plasmas 8, 441 (2001). Two representative long wavelength modes, shear Alfv\'en waves and resistive tearing modes, are verified in cylindrical and toroidal magnetic field geometries.
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