Element Diffusion in the Solar Interior

@article{Thoul1992ElementDI,
  title={Element Diffusion in the Solar Interior},
  author={Anne Thoul and John N. Bahcall and Abraham Loeb},
  journal={The Astrophysical Journal},
  year={1992},
  volume={421},
  pages={828}
}
We study the diffusion of helium and other heavy elements in the solar interior by solving exactly the set of flow equations developed by Burgers for a multi-component fluid, including the residual heat-flow terms. No approximation is made concerning the relative concentrations and no restriction is placed on the number of elements considered. We give improved diffusion velocities for hydrogen, helium, oxygen and iron, in the analytic form derived previously by Bahcall and Loeb. These… 
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