The Effect of Ionic Correlations on Radiative Properties in the Solar Interior and Terrestrial Experiments

With the aim of solving the decade-old problem of solar opacity, we report substantial photoabsorption uncertainty due to the effect of ion-ion correlations. By performing detailed opacity calculations of the solar mixture, we find that taking into account the ionic structure changes the Rosseland o...

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Bibliographic Details
Published inThe Astrophysical journal Vol. 856; no. 2; pp. 135 - 140
Main Authors Krief, Menahem, Kurzweil, Yair, Feigel, Alexander, Gazit, Doron
Format Journal Article
LanguageEnglish
Published Philadelphia The American Astronomical Society 01.04.2018
IOP Publishing
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Summary:With the aim of solving the decade-old problem of solar opacity, we report substantial photoabsorption uncertainty due to the effect of ion-ion correlations. By performing detailed opacity calculations of the solar mixture, we find that taking into account the ionic structure changes the Rosseland opacity near the convection zone by ∼10%. We also report a ∼15% difference in the Rosseland opacity for iron, which was recently measured at the Sandia Z facility, where the temperature reached that prevailing in the convection zone boundary while the density was 2.5 times lower. Finally, we propose a method to measure opacities at solar temperatures and densities that have never been reached in the past via laboratory radiation flow experiments, by using plastic foams doped with permilles of dominant photon absorbers in the Sun. The method is advantageous for an experimental study of solar opacities that may lead to a resolution of the solar abundance problem.
Bibliography:The Sun and the Heliosphere
AAS05831
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/aab353