Suppressing the Numerical Cherenkov Instability in FDTD PIC Codes
classification
⚛️ physics.plasm-ph
cs.NAmath.NAphysics.acc-phphysics.comp-ph
keywords
cherenkovfdtdinstabilitynumericalproceduresimulationsuppressingacceleration
read the original abstract
A procedure for largely suppressing the numerical Cherenkov instability in finite difference time-domain (FDTD) particle-in-cell (PIC) simulations of cold, relativistic beams is derived, and residual growth rates computed and compared with WARP code simulation results. Sample laser-plasma acceleration simulation output is provided to further validate the new procedure.
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