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Title: A New Generation of Los Alamos Opacity Tables

Abstract

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 (EOS) 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.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1335616
Report Number(s):
LA-UR-15-28532
Journal ID: ISSN 1538-4357
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 817; Journal Issue: 2; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; opacities; atomic data; solar mixture

Citation Formats

Colgan, James Patrick, Kilcrease, David Parker, Magee, Jr., Norman H., Sherrill, Manolo Edgar, Abdallah, Joseph, Hakel, Peter, Fontes, Christopher John, Guzik, Joyce Ann, and Mussack Tamashiro, Kathleen Anita. A New Generation of Los Alamos Opacity Tables. United States: N. p., 2016. Web. doi:10.3847/0004-637X/817/2/116.
Colgan, James Patrick, Kilcrease, David Parker, Magee, Jr., Norman H., Sherrill, Manolo Edgar, Abdallah, Joseph, Hakel, Peter, Fontes, Christopher John, Guzik, Joyce Ann, & Mussack Tamashiro, Kathleen Anita. A New Generation of Los Alamos Opacity Tables. United States. doi:10.3847/0004-637X/817/2/116.
Colgan, James Patrick, Kilcrease, David Parker, Magee, Jr., Norman H., Sherrill, Manolo Edgar, Abdallah, Joseph, Hakel, Peter, Fontes, Christopher John, Guzik, Joyce Ann, and Mussack Tamashiro, Kathleen Anita. Tue . "A New Generation of Los Alamos Opacity Tables". United States. doi:10.3847/0004-637X/817/2/116. https://www.osti.gov/servlets/purl/1335616.
@article{osti_1335616,
title = {A New Generation of Los Alamos Opacity Tables},
author = {Colgan, James Patrick and Kilcrease, David Parker and Magee, Jr., Norman H. and Sherrill, Manolo Edgar and Abdallah, Joseph and Hakel, Peter and Fontes, Christopher John and Guzik, Joyce Ann and Mussack Tamashiro, Kathleen Anita},
abstractNote = {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 (EOS) 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.},
doi = {10.3847/0004-637X/817/2/116},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 817,
place = {United States},
year = {2016},
month = {1}
}

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Cited by: 27 works
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