Approximate Crank–Nicolson Algorithm with Higher-Order PML Implementation for Plasma Simulation in Open Region Problems

By incorporating the higher-order concept with perfectly matched later (PML) scheme, unconditionally stable approximate Crank–Nicolson algorithm is proposed for plasma simulation in open region problems. More precisely, implementation based on CN Direct-Splitting (CNDS) procedure finite-difference time-domain (FDTD) unmagnetized simulation. The can be regarded as frequency-dependent media which calculated by piecewise linear recursive convolution (PLRC) method. shows advantages of concept, CNDS procedure, and PLRC method terms improved absorbing performance, enhanced computational efficiency, outstanding calculation accuracy. Numerical examples are introduced to indicate effectiveness efficiency. It concluded from results that scheme considerable accuracy, absorption, unconditional stability.