Diffusion coefficients in white dwarfs

2014/10/28 by D. Saumon, Saumon, D., C. E. Starrett +3
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Astro and Planetary Science #FOS: Physical sciences #High-pressure geophysics and materials #Phase Equilibria and Thermodynamics #Plasma Physics (physics.plasm-ph) #Solar and Stellar Astrophysics (astro-ph.SR)

paper · pdf · doi:10.48550/arxiv.1410.7645

openalex publication_date 2014/10/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Models of diffusion in white dwarfs universally rely on the coefficients calculated by Paquette et al. (1986). We present new calculations of diffusion coefficients based on an advanced microscopic theory of dense plasmas and a numerical simulation approach that intrinsically accounts for multiple collisions. Our method is validated against a state-of-the-art method and we present results for the diffusion of carbon ions in a helium plasma.

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