skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

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}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 27 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

The Chemical Composition of the Sun
journal, September 2009


Updated opacities from the Opacity Project
journal, June 2005


New Solar Opacities, Abundances, Helioseismology, and Neutrino Fluxes
journal, January 2005

  • Bahcall, John N.; Serenelli, Aldo M.; Basu, Sarbani
  • The Astrophysical Journal, Vol. 621, Issue 1
  • DOI: 10.1086/428929

A higher-than-predicted measurement of iron opacity at solar interior temperatures
journal, December 2014

  • Bailey, J. E.; Nagayama, T.; Loisel, G. P.
  • Nature, Vol. 517, Issue 7532
  • DOI: 10.1038/nature14048

Constraining Solar Abundances Using Helioseismology
journal, April 2004

  • Basu, Sarbani; Antia, H. M.
  • The Astrophysical Journal, Vol. 606, Issue 1
  • DOI: 10.1086/421110

How Much Do Helioseismological Inferences Depend on the Assumed Reference Model?
journal, February 2000

  • Basu, Sarbani; Pinsonneault, M. H.; Bahcall, John N.
  • The Astrophysical Journal, Vol. 529, Issue 2
  • DOI: 10.1086/308302

Solar Mixture Opacity Calculations Using Detailed Configuration and Level Accounting Treatments
journal, December 2011

  • Blancard, Christophe; Cossé, Philippe; Faussurier, Gérald
  • The Astrophysical Journal, Vol. 745, Issue 1
  • DOI: 10.1088/0004-637X/745/1/10

Stellar Opacity
journal, September 1976


Integral and differential cross sections for electron impact ionization
journal, November 1991

  • Clark, R. E. H.; Abdallah, J. , Jr.; Mann, J. B.
  • The Astrophysical Journal, Vol. 381
  • DOI: 10.1086/170685

Statistical mechanics of partially ionized stellar plasma - The Planck-Larkin partition function, polarization shifts, and simulations of optical spectra
journal, August 1987

  • Dappen, Werner; Anderson, Lawrence; Mihalas, Dimitri
  • The Astrophysical Journal, Vol. 319
  • DOI: 10.1086/165446

The   Cep/SPB star 12 Lacertae: extended mode identification and complex seismic modelling
journal, March 2013

  • Daszynska-Daszkiewicz, J.; Szewczuk, W.; Walczak, P.
  • Monthly Notices of the Royal Astronomical Society, Vol. 431, Issue 4
  • DOI: 10.1093/mnras/stt418

Constraints on opacities from complex asteroseismology of B-type pulsators: the β Cephei star θ Ophiuchi
journal, October 2009


Complex asteroseismology of the β Cep/slowly pulsating B-type pulsator ν Eridani: constraints on opacities
journal, March 2010


That Bound-Free Absorption Coefficient of the Hydrogen Negative Ion.
journal, September 1962


Continuum States of H^{-} and the Free-Free Absorption Coefficient.
journal, February 1965


EXPLORING MASS LOSS, LOW- Z ACCRETION, AND CONVECTIVE OVERSHOOT IN SOLAR MODELS TO MITIGATE THE SOLAR ABUNDANCE PROBLEM
journal, March 2010


CHEMEOS: A New Chemical-Picture-Based Model for Plasma Equation-of-State Calculations
conference, January 2004

  • Hakel, Peter
  • ATOMIC PROCESSES IN PLASMAS: 14th APS Topical Conference on Atomic Processes in Plasmas, AIP Conference Proceedings
  • DOI: 10.1063/1.1824870

The new Los Alamos opacity code ATOMIC
journal, May 2006

  • Hakel, P.; Sherrill, M. E.; Mazevet, S.
  • Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 99, Issue 1-3
  • DOI: 10.1016/j.jqsrt.2005.04.007

Iron-group opacities for B stars
journal, April 2015

  • Iglesias, Carlos A.
  • Monthly Notices of the Royal Astronomical Society, Vol. 450, Issue 1
  • DOI: 10.1093/mnras/stv591

Updated Opal Opacities
journal, June 1996

  • Iglesias, Carlos A.; Rogers, Forrest J.
  • The Astrophysical Journal, Vol. 464
  • DOI: 10.1086/177381

Plasma non-ideality effects on the photon–electron scattering contribution to radiative opacities
journal, October 2001

  • Kilcrease, David P.; Magee, Norman H.
  • Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 71, Issue 2-6
  • DOI: 10.1016/S0022-4073(01)00088-7

Exact low-energy expansion of the Rayleigh scattering cross-section by atomic hydrogen
journal, April 2005


Plasma line shapes for selected transitions in hydrogen-, helium- and lithium-like ions
journal, November 1988


First new Solar Models with opas Opacity Tables
journal, November 2015


Los Alamos Opacities: Transition from LEDCOP to ATOMIC
conference, January 2004

  • Magee, N. H.
  • ATOMIC PROCESSES IN PLASMAS: 14th APS Topical Conference on Atomic Processes in Plasmas, AIP Conference Proceedings
  • DOI: 10.1063/1.1824868

Opacity Calculations for Solar Mixtures
journal, August 2015

  • Mondet, Guillaume; Blancard, Christophe; Cossé, Philippe
  • The Astrophysical Journal Supplement Series, Vol. 220, Issue 1
  • DOI: 10.1088/0067-0049/220/1/2

Control and diagnosis of temperature, density, and uniformity in x-ray heated iron/magnesium samples for opacity measurements
journal, May 2014

  • Nagayama, T.; Bailey, J. E.; Loisel, G.
  • Physics of Plasmas, Vol. 21, Issue 5
  • DOI: 10.1063/1.4872324

Relativistic free-free Gaunt factor of the dense high-temperature stellar plasma
journal, February 1987

  • Nakagawa, Masayuki; Kohyama, Yasuharu; Itoh, Naoki
  • The Astrophysical Journal Supplement Series, Vol. 63
  • DOI: 10.1086/191177

Seismological Tests of Solar Models Calculated with the NACRE Reaction Rates and the Grevesse and Sauval 1998 Mixture
journal, March 2001

  • Neuforge‐Verheecke, C.; Goriely, S.; Guzik, J. A.
  • The Astrophysical Journal, Vol. 550, Issue 1
  • DOI: 10.1086/319708

Helioseismic Tests of the New Los Alamos LEDCOP Opacities
journal, November 2001

  • Neuforge‐Verheecke, C.; Guzik, J. A.; Keady, J. J.
  • The Astrophysical Journal, Vol. 561, Issue 1
  • DOI: 10.1086/323229

Modules for Experiments in Stellar Astrophysics (Mesa): Binaries, Pulsations, and Explosions
journal, September 2015

  • Paxton, Bill; Marchant, Pablo; Schwab, Josiah
  • The Astrophysical Journal Supplement Series, Vol. 220, Issue 1
  • DOI: 10.1088/0067-0049/220/1/15

Radiative atomic Rosseland mean opacity tables
journal, April 1992

  • Rogers, Forrest J.; Iglesias, Carlos A.
  • The Astrophysical Journal Supplement Series, Vol. 79
  • DOI: 10.1086/191659

The Opacity at High Temperatures due to Compton Scattering.
journal, January 1959

  • Sampson, Douglas H.
  • The Astrophysical Journal, Vol. 129
  • DOI: 10.1086/146671

A comparison of Rosseland-mean opacities from OP and OPAL
journal, October 2004


Opacities for stellar envelopes
journal, February 1994

  • Seaton, M. J.; Yan, Y.; Mihalas, D.
  • Monthly Notices of the Royal Astronomical Society, Vol. 266, Issue 4
  • DOI: 10.1093/mnras/266.4.805

New Solar Composition: the Problem with Solar Models Revisited
journal, October 2009


The Continuous Absorption Coefficient of HE^{-}.
journal, February 1965

  • Somerville, W. B.
  • The Astrophysical Journal, Vol. 141
  • DOI: 10.1086/148167

The Rayleigh Scattering Cross-Sections of He, C, N and O
journal, July 1969

  • Tarafdar, S. P.; Vardya, M. S.
  • Monthly Notices of the Royal Astronomical Society, Vol. 145, Issue 2
  • DOI: 10.1093/mnras/145.2.171

Wider pulsation instability regions for β Cephei and SPB stars calculated using new Los Alamos opacities
journal, August 2015


    Works referencing / citing this record:

    Progress in Global Helioseismology: A New Light on the Solar Modeling Problem and Its Implications for Solar-Like Stars
    journal, July 2019

    • Buldgen, Gaël; Salmon, Sébastien; Noels, Arlette
    • Frontiers in Astronomy and Space Sciences, Vol. 6
    • DOI: 10.3389/fspas.2019.00042