Free-free opacity in dense plasmas with an average atom model

Shaffer, Nathaniel R.; Ferris, Natalie G.; Colgan, James Patrick; Kilcrease, David Parker; Starrett, Charles Edward

doi:10.1016/j.hedp.2017.02.008

Free-free opacity in dense plasmas with an average atom model

Journal Article · Mon Feb 27 23:00:00 EST 2017 · High Energy Density Physics

DOI:https://doi.org/10.1016/j.hedp.2017.02.008· OSTI ID:1345951

Shaffer, Nathaniel R. ^[1]; Ferris, Natalie G. ^[2]; ^[3]; ^[3]; ^[3]

Univ. of Iowa, Iowa City, IA (United States)
Dickinson College, Carlisle, PA (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

A model for the free-free opacity of dense plasmas is presented. The model uses a previously developed average atom model, together with the Kubo-Greenwood model for optical conductivity. This, in turn, is used to calculate the opacity with the Kramers-Kronig dispersion relations. Furthermore, comparisons to other methods for dense deuterium results in excellent agreement with DFT-MD simulations, and reasonable agreement with a simple Yukawa screening model corrected to satisfy the conductivity sum rule.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1345951

Alternate ID(s):: OSTI ID: 1397415

Report Number(s):: LA-UR-17-20595

Journal Information:: High Energy Density Physics, Journal Name: High Energy Density Physics Journal Issue: C Vol. 23; ISSN 1574-1818

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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A review on ab initio studies of static, transport, and optical properties of polystyrene under extreme conditions for inertial confinement fusion applications Collins, L. A.; Boehly, T. R.; Ding, Y. H. Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5017970	journal	May 2018
On collisional free-free photon absorption in warm dense matter Meyer-ter-Vehn, J.; Ramis, R. Physics of Plasmas, Vol. 26, Issue 11 https://doi.org/10.1063/1.5121218	journal	November 2019
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On collisional free-free photon absorption in warm dense matter Meyer-ter-Vehn, Jürgen; Ramis, Rafael arXiv https://doi.org/10.48550/arxiv.1907.09782	text	January 2019

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