Astrophysical opacity library. [Equation of state, mean opacities, extinction coefficients, electron density, mass density, plasma cut-off frequency]
- 1 August 1977
- report
- Published by Office of Scientific and Technical Information (OSTI)
Abstract
The astrophysical elements opacity library includes equation of state data, various mean opacities, and 2000 values of the frequency-dependent extinction coefficients in equally spaced intervals u identical with h..nu../kT from 0 to 20 for 41 degeneracy parameters eta from -28 (nondegenerate) to 500 and 46 temperatures kT from 1 eV to 100 keV. Among available auxiliary quantities are the free electron density, mass density, and plasma cutoff frequency. A library-associated program can produce opacities for mixtures with up to 20 astrophysically abundant constituent elements at 4 levels of utility for the user.Keywords
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