CHEMICAL ELEMENTS DIFFUSION IN THE SOLAR INTERIOR

The standard solar model and equation of state have been used to study relative diffusion of Hydrogen and Helium in the present time for solar interior, as a function of distance and depth from the center of the star. The effects of temperature and density on diffusion velocity for these chemical elements have been explaned. It is found that heat flow which is arising from these reactions leads to an increase in helium diffusion velocity, while the temperature and density leading to a decrease in Hydrogen diffusion velocity. This means that Hydrogen behaves inversely with that for helium does through these reactions. Accordingly, diffusion percentages for Hydrogen, Helium and other Heavy Elements could be determined for the main sequence stars and white dwarf stars.