A NEW GENERATION OF LOS ALAMOS OPACITY TABLES

被引：157

作者：

Colgan, J. ^{[1
]}

Kilcrease, D. P. ^{[1
]}

Magee, N. H. ^{[1
]}

Sherrill, M. E. ^{[1
]}

Abdallah, J., Jr. ^{[1
]}

Hakel, P. ^{[1
]}

Fontes, C. J. ^{[1
]}

Guzik, J. A. ^{[1
]}

Mussack, K. A. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA

来源：

ASTROPHYSICAL JOURNAL | 2016年 / 817卷 / 02期

关键词：

opacity; plasmas; FREE ABSORPTION-COEFFICIENT; LIGHT-ELEMENT OPACITIES; EQUATION-OF-STATE; ELECTRON-ION PLASMAS; FREE GAUNT FACTOR; STELLAR ENVELOPES; SOLAR MODELS; COMPLEX ASTEROSEISMOLOGY; ASTROPHYSICAL INTEREST; CHEMICAL-COMPOSITION;

D O I：

10.3847/0004-637X/817/2/116

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new, publicly available set of Los Alamos OPLIB opacity tables for the elements hydrogen through zinc. Our tables are computed using the Los Alamos ATOMIC opacity and plasma modeling code, and make use of atomic structure calculations that use fine-structure detail for all the elements considered. Our equation of state model, known as ChemEOS, is based on the minimization of free energy in a chemical picture and appears to be a reasonable and robust approach to determining atomic state populations over a wide range of temperatures and densities. In this paper we discuss in detail the calculations that we have performed for the 30 elements considered, and present some comparisons of our monochromatic opacities with measurements and other opacity codes. We also use our new opacity tables in solar modeling calculations and compare and contrast such modeling with previous work.

引用

页数：10

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