Molecular dynamics simulation for modelling plasma spectroscopy

Abstract

The ion–electron coupling properties for an ion impurity in an electron gas and for a two-component plasma are carried out on the basis of a regularized electron–ion potential removing the short-range Coulomb divergence. This work is largely motivated by the study of radiator dipole relaxationplasmas which makes a real link between models and experiments. Current radiative property models for plasmas include single electron collisions neglecting charge–charge correlations within the classical quasi-particle approach commonly used in this field. The dipole relaxation simulation based on electron–ion molecular dynamics proposed here will provide a meansbenchmark and improve model developments. Benefiting from a detailed study of a single ion embedded in an electron plasma, the challenging two-component ion–electron molecular dynamics simulations are proved accurate. They open new possibilities of obtaining reference lineshape data.