Drift approximation by the modified Boris algorithm of charged-particle dynamics in toroidal geometry
Numerical Analysis
2022-11-04 v1 Numerical Analysis
Plasma Physics
Abstract
In this paper, we study the charged-particle dynamics under strong magnetic field in a toroidal axi-symmetric geometry. Using modulated Fourier expansions of the exact and numerical solutions, the long-term drift motion of the exact solution in toroidal geometry is derived and the error analysis of the large-stepsize modified Boris algorithm over long time scales is provided. Numerical experiments illustrate the theoretical results.
Keywords
Cite
@article{arxiv.2211.01462,
title = {Drift approximation by the modified Boris algorithm of charged-particle dynamics in toroidal geometry},
author = {Yanyan Shi},
journal= {arXiv preprint arXiv:2211.01462},
year = {2022}
}