Neutral helium diffusion coefficients in stars

Details Neutral helium diffusion coefficients in stars Neutral helium diffusion coefficients in stars

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...226..483m&link_type=abstract

Astrophysical Journal, Part 1, vol. 226, Dec. 1, 1978, p. 483-485. Research supported by the National Research Council of Canad

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31

Atmospheric Diffusion, Helium, Neutral Gases, Stellar Atmospheres, A Stars, Diffusion Coefficient, Solar Corona, Thermal Diffusion

Scientific paper

The neutral atom-proton diffusion coefficient is important in the solar corona and in the atmosphere of He-weak and He-rich stars. Through calculations using a realistic potential that reproduces both the inner repulsive core and the longer-range attraction via polarization, the diffusion coefficient for helium is shown to be due mainly to the long-range interaction. Thermal diffusion is calculated and is shown to be negligible. For other elements, the diffusion coefficient due to polarization should be used.

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