A Simple Solver for the Two-Fluid Plasma Model Based on PseudoSpectral Time-Domain Algorithm

We present a solver of 3D two-fluid plasma model for the simulation short-pulse laser interactions with plasma. This resolves equations ideal gas closure. also include Bhatnagar-Gross-Krook collision model. Our is based on PseudoSpectral Time-Domain (PSTD) method to solve Maxwell's curl equations. use Strang splitting integrate Euler source term: while are solved composite scheme mixing Lax-Friedrichs and Lax-Wendroff schemes, term integrated fourth-order Runge-Kutta scheme. simple implement because it only relies finite difference schemes Fast Fourier Transforms. It does not require spatially staggered grids. The was tested against several well-known problems physics. Numerical simulations gave results in excellent agreement analytical solutions or previous from literature.