Ion-ion dynamic structure factor of warm dense mixtures

Gill, N. M.; Heinonen, R. A.; Starrett, C. E.; Saumon, D.

doi:10.1103/PhysRevE.91.063109

Title: Ion-ion dynamic structure factor of warm dense mixtures

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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:

Gill, N. M. ^[1]; Heinonen, R. A. ^[2]; Starrett, C. E. ^[2]; Saumon, D. ^[2]

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:: Thu Jun 25 00:00:00 EDT 2015

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.

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                    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

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                    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.

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@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}

}

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