A δf PIC method with Forward-Backward Lagrangian reconstructions

Martin Campos Pinto, Merlin Pelz, Pierre-Henri Tournier

2022 · arXiv · arXiv · 10.48550/arxiv.2210.03726

Abstract

In this work we describe a $δf$ particle simulation method where the bulk density is periodically remapped on a coarse spline grid using a Forward-Backward Lagrangian (FBL) approach. This method is designed to handle plasma regimes where the densities strongly deviate from their initial state and may evolve into general profiles. We describe the method in the case of an electrostatic particle-in-cell scheme and validate its qualitative properties using a classical two-stream instability subject to a uniform oscillating drive.

BibTeX

@article{https://doi.org/10.48550/arxiv.2210.03726,

  doi = {10.48550/ARXIV.2210.03726},

  url = {https://arxiv.org/abs/2210.03726},

  author = {Pinto, Martin Campos and Pelz, Merlin and Tournier, Pierre-Henri},

  keywords = {Computational Physics (physics.comp-ph), Numerical Analysis (math.NA), FOS: Physical sciences, FOS: Physical sciences, FOS: Mathematics, FOS: Mathematics},

  title = {A $δf$ PIC method with Forward-Backward Lagrangian reconstructions},

  publisher = {arXiv},

  year = {2022},

  copyright = {arXiv.org perpetual, non-exclusive license}
}