A modified perfectly matched layer implementation for use in electromagnetic PIC codes

A modification to the Berenger perfectly matched layer (PML) absorbing boun dary condition that allows it to be used in particle-in-cell applications w here the primary power flow through the boundary is due to electromagnetic radiation is presented. Instead of modeling particles within the PML, a ter m is introduced which diffuses charge conservation errors arising from the removal of particles incident on the PML to the outer boundary. Numerical r esults are provided to demonstrate the performance of the algorithm. (C) 19 99 Academic Press.