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Analysis of the presence of small admixtures of heavy elements in the solar plasma by using the SAHA-S equation of state

  • S. V. Ayukov
  • A. Baturin
  • V. K. Gryaznov
  • I. L. Iosilevskii
  • A. N. Starostin
  • V. E. Fortov
Gravity, Astrophysics

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.

PACS numbers

95.30.Qd 96.60.Fs 

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Copyright information

© MAIK "Nauka/Interperiodica" 2004

Authors and Affiliations

  • S. V. Ayukov
    • 1
  • A. Baturin
    • 1
  • V. K. Gryaznov
    • 2
  • I. L. Iosilevskii
    • 3
  • A. N. Starostin
    • 4
  • V. E. Fortov
    • 2
  1. 1.Sternberg Astronomical InstituteUniversitetskii pr. 13MoscowRussia
  2. 2.Institute of Problems of Chemical PhysicsRussian Academy of SciencesChernogolovka, Moscow regionRussia
  3. 3.Moscow Institute of Physics and Technology (State University)Institutskii per. 9Dolgoprudnyi, Moscow regionRussia
  4. 4.Troitsk Institute for Innovation and Thermonuclear ResearchTroitsk, Moscow regionRussia

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