Ion-ion dynamic structure factor of warm dense mixtures
Abstract
In this study, the ion-ion dynamic structure factor of warm dense matter is determined using the recently developed pseudoatom molecular dynamics method [Starrett et al., Phys. Rev. E 91, 013104 (2015)]. The method uses density functional theory to determine ion-ion pair interaction potentials that have no free parameters. These potentials are used in classical molecular dynamics simulations. This constitutes a computationally efficient and realistic model of dense plasmas. Comparison with recently published simulations of the ion-ion dynamic structure factor and sound speed of warm dense aluminum finds good to reasonable agreement. Using this method, we make predictions of the ion-ion dynamical structure factor and sound speed of a warm dense mixture—equimolar carbon-hydrogen. This material is commonly used as an ablator in inertial confinement fusion capsules, and our results are amenable to direct experimental measurement.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Auburn Univ., Auburn, AL (United States)
- 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:
- 1247149
- Alternate Identifier(s):
- OSTI ID: 1198539
- Report Number(s):
- LA-UR-15-21015
Journal ID: ISSN 1539-3755; PLEEE8
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print)
- Additional Journal Information:
- Journal Name: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print); Journal Volume: 91; Journal Issue: 6; Journal ID: ISSN 1539-3755
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Gill, N. M., Heinonen, R. A., Starrett, C. E., and Saumon, D. Ion-ion dynamic structure factor of warm dense mixtures. United States: N. p., 2015.
Web. doi:10.1103/PhysRevE.91.063109.
Gill, N. M., Heinonen, R. A., Starrett, C. E., & Saumon, D. Ion-ion dynamic structure factor of warm dense mixtures. United States. https://doi.org/10.1103/PhysRevE.91.063109
Gill, N. M., Heinonen, R. A., Starrett, C. E., and Saumon, D. Thu .
"Ion-ion dynamic structure factor of warm dense mixtures". United States. https://doi.org/10.1103/PhysRevE.91.063109. https://www.osti.gov/servlets/purl/1247149.
@article{osti_1247149,
title = {Ion-ion dynamic structure factor of warm dense mixtures},
author = {Gill, N. M. and Heinonen, R. A. and Starrett, C. E. and Saumon, D.},
abstractNote = {In this study, the ion-ion dynamic structure factor of warm dense matter is determined using the recently developed pseudoatom molecular dynamics method [Starrett et al., Phys. Rev. E 91, 013104 (2015)]. The method uses density functional theory to determine ion-ion pair interaction potentials that have no free parameters. These potentials are used in classical molecular dynamics simulations. This constitutes a computationally efficient and realistic model of dense plasmas. Comparison with recently published simulations of the ion-ion dynamic structure factor and sound speed of warm dense aluminum finds good to reasonable agreement. Using this method, we make predictions of the ion-ion dynamical structure factor and sound speed of a warm dense mixture—equimolar carbon-hydrogen. This material is commonly used as an ablator in inertial confinement fusion capsules, and our results are amenable to direct experimental measurement.},
doi = {10.1103/PhysRevE.91.063109},
journal = {Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print)},
number = 6,
volume = 91,
place = {United States},
year = {Thu Jun 25 00:00:00 EDT 2015},
month = {Thu Jun 25 00:00:00 EDT 2015}
}
Web of Science