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

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.
Authors:
 [1] ;  [2] ; ORCiD logo [3] ; ORCiD logo [3] ; ORCiD logo [3]
  1. Univ. of Iowa, Iowa City, IA (United States)
  2. Dickinson College, Carlisle, PA (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
LA-UR-17-20595
Journal ID: ISSN 1574-1818; TRN: US1700669
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
High Energy Density Physics
Additional Journal Information:
Journal Volume: 23; Journal Issue: C; Journal ID: ISSN 1574-1818
Publisher:
Elsevier
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; opacity; warm dense matter; average atom model
OSTI Identifier:
1345951
Alternate Identifier(s):
OSTI ID: 1397415

Shaffer, Nathaniel R., Ferris, Natalie G., Colgan, James Patrick, Kilcrease, David Parker, and Starrett, Charles Edward. Free-free opacity in dense plasmas with an average atom model. United States: N. p., Web. doi:10.1016/j.hedp.2017.02.008.
Shaffer, Nathaniel R., Ferris, Natalie G., Colgan, James Patrick, Kilcrease, David Parker, & Starrett, Charles Edward. Free-free opacity in dense plasmas with an average atom model. United States. doi:10.1016/j.hedp.2017.02.008.
Shaffer, Nathaniel R., Ferris, Natalie G., Colgan, James Patrick, Kilcrease, David Parker, and Starrett, Charles Edward. 2017. "Free-free opacity in dense plasmas with an average atom model". United States. doi:10.1016/j.hedp.2017.02.008. https://www.osti.gov/servlets/purl/1345951.
@article{osti_1345951,
title = {Free-free opacity in dense plasmas with an average atom model},
author = {Shaffer, Nathaniel R. and Ferris, Natalie G. and Colgan, James Patrick and Kilcrease, David Parker and Starrett, Charles Edward},
abstractNote = {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.},
doi = {10.1016/j.hedp.2017.02.008},
journal = {High Energy Density Physics},
number = C,
volume = 23,
place = {United States},
year = {2017},
month = {2}
}