Improved multispecies Dougherty collisions
Plasma Physics
2022-06-01 v2
Abstract
The Dougherty model Fokker-Planck operator is extended to describe nonlinear full-f collisions between multiple species in plasmas. Simple relations for cross-species interactions are developed which obey conservation laws, and reproduce familiar velocity and temperature relaxation rates. This treatment of multispecies Dougherty collisions, valid for arbitrary mass ratios, satisfies the H-Theorem unlike analogous Bhatnagar-Gross-Krook operators.
Cite
@article{arxiv.2109.10381,
title = {Improved multispecies Dougherty collisions},
author = {Manaure Francisquez and James Juno and Ammar Hakim and Gregory W. Hammett and Darin R. Ernst},
journal= {arXiv preprint arXiv:2109.10381},
year = {2022}
}