A New Generation of Los Alamos Opacity Tables

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

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

Title: A New Generation of Los Alamos Opacity Tables

Journal Article · Tue Jan 26 00:00:00 EST 2016 · The Astrophysical Journal (Online)

DOI:https://doi.org/10.3847/0004-637X/817/2/116· OSTI ID:1335616

Colgan, James Patrick ^[1]; Kilcrease, David Parker ^[1]; Magee, Jr., Norman H. ^[1]; Sherrill, Manolo Edgar ^[1]; Abdallah, Joseph ^[1]; Hakel, Peter ^[1]; Fontes, Christopher John ^[1]; Guzik, Joyce Ann ^[1]; Mussack Tamashiro, Kathleen Anita ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

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.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1335616

Report Number(s):: LA-UR-15-28532

Journal Information:: The Astrophysical Journal (Online), Vol. 817, Issue 2; ISSN 1538-4357

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 122 works

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