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Hydrogen and Helium-4 in thermodynamic equilibrium

  1. Feb 19, 2012 #1
    In thermodynamical equilibrium what would be the proportion of hydrogen to helium-4? According to the proton-proton chain branch I it would seem that the equilibrium would be 75% H-25% He-4? is this correct? (This is of course an unrealistic scenario).
  2. jcsd
  3. Feb 22, 2012 #2
    In nuclear statistical equilibrium, everything would be iron. P-P causes hydrogen to fuse into helium, but there aren't any significant processes going the other way.
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