Abstract
The thermodynamic functions of a weakly nonideal plasma are extensively calculated for conditions typical of the depths of stars by using the SAHA-S equation of state. These calculations ensure precise analysis of the effect of the heavy-element content on adiabatic compressibility in the depths of the Sun. Comparison of model calculations with recent helioseismic data ensures more precise determination of solar-plasma composition. This comparison shows that the inclusion of additional components to the composition of heavy-element admixtures is a necessary condition for the theoretical equation of state and the results of analysis of solar oscillations to be consistent.
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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 80, No. 3, 2004, pp. 163–166.
Original Russian Text Copyright © 2004 by Ayukov, Baturin, Gryaznov, Iosilevski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Starostin, Fortov.
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Ayukov, S.V., Baturin, A., Gryaznov, V.K. et al. Analysis of the presence of small admixtures of heavy elements in the solar plasma by using the SAHA-S equation of state. Jetp Lett. 80, 141–144 (2004). https://doi.org/10.1134/1.1808837
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DOI: https://doi.org/10.1134/1.1808837