The electromagnetic particle-in-cell (PIC) simulation technology, which bases on the time-domain finite difference (FDTD) algorithm and the concept of finite-size particle, can solve the Maxwell equations and the motion equations of electrons directly.

• 电磁粒子模拟技术(Particle in Cell Simulation)技术基于时域有限差分方法和有限大小粒子概念，能直接求解有源麦克斯韦方程组和电子相对论运动方程。 与大信号理论模拟相比，PIC模拟能更全面地反映互作用物理过程。