XOOPIC is a two-dimensional 3-velocity particle-in-cell simulator. It can handle electrostatic and electromagnetic models, has a large variety of boundary conditions, supports multiple gasses and gas chemistry, and is easily reconfigurable via an input file.
When I using PeriodicFlag, significant potential and electric field distortion will occur at periodic boundaries, and the terminal will report an error of "Poisson solve FAILURE: dadi: iter=xx, ndiscard>20". What should I do?