A spectral, quasi-cylindrical and dispersion-free Particle-In-Cell algorithm

作者：Lehe Remi; Kirchen Manuel; Andriyash Igor A; Godfrey Brendan B; Vay Jean Luc

来源：Computer Physics Communications, 2016, 203: 66-82.

DOI：10.1016/j.cpc.2016.02.007

• Particle-In-Cell
• Pseudo-spectral
• Hankel transform
• Cylindrical geometry

We propose a spectral Particle-In-Cell (PIC) algorithm that is based on the combination of a Hankel transform and a Fourier transform. For physical problems that have close-to-cylindrical symmetry, this algorithm can be much faster than full 3D PIC algorithms. In addition, unlike standard finite-difference PIC codes, the proposed algorithm is free of spurious numerical dispersion, in vacuum. This algorithm is benchmarked in several situations that are of interest for laser-plasma interactions. These benchmarks show that it avoids a number of numerical artifacts, that would otherwise affect the physics in a standard PIC algorithm including the zero-order numerical Cherenkov effect. Published by Elsevier B.V.

• 出版日期2016-6