Thermal Conductivity of the Classical Electron One-Component Plasma

Nyíri, Balázs; Szalai, L.; Holló, S.

doi:10.1103/physrevlett.81.1622

Cited by 26 publications

(29 citation statements)

References 23 publications

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“…In the line of previous works [68][69][70][71][72][73], we investigate the transport properties of a one-component plasma via its dynamical structure factors. Since the scope of this paper is to study and compare transport in low-dimensional models, we limit ourselves to consider only one-dimensional plasmas in a static neutralizing background.…”

Section: B Numerical Simulations and Resultsmentioning

confidence: 99%

Anomalous dynamical scaling in anharmonic chains and plasma models with multiparticle collisions

et al. 2015

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We study the anomalous dynamical scaling of equilibrium correlations in one-dimensional systems. Two different models are compared: the Fermi-Pasta-Ulam chain with cubic and quartic nonlinearity and a gas of point particles interacting stochastically through multiparticle collision dynamics. For both models-that admit three conservation laws-by means of detailed numerical simulations we verify the predictions of nonlinear fluctuating hydrodynamics for the structure factors of density and energy fluctuations at equilibrium. Despite this, violations of the expected scaling in the currents correlation are found in some regimes, hindering the observation of the asymptotic scaling predicted by the theory. In the case of the gas model this crossover is clearly demonstrated upon changing the coupling constant.

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Section: B Numerical Simulations and Resultsmentioning

confidence: 99%

Anomalous dynamical scaling in anharmonic chains and plasma models with multiparticle collisions

et al. 2015

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“…Large-scale molecular dynamics and Monte Carlo simulations of the OCP [47][48][49][50][51][52] have demonstrated that many of the basic properties such as diffusion and viscosity can be represented in terms of a single quantity, the plasma coupling coefficient Γ, defined by the ratio of the potential to kinetic energy,…”

Section: Inferno/ocp Modelmentioning

confidence: 99%

Quantum molecular dynamics simulations of transport properties in liquid and dense-plasma plutonium

et al. 2011

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We have calculated the viscosity and self-diffusion coefficients of plutonium in the liquid phase using quantum molecular dynamics (QMD) and in the dense-plasma phase using orbital-free molecular dynamics (OFMD), as well as in the intermediate warm dense matter regime with both methods. Our liquid metal results for viscosity are about 40% lower than measured experimentally, whereas a previous calculation using an empirical interatomic potential (modified embedded atom [LANL publication number: LA-UR-10-07728]

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“…In practice, strong coupling directly influences the value of transport coefficients such as diffusion [4,5], shear viscosity [6,7], and thermal conductivity [8][9][10]. The lack of accurate transport coefficients often presents a key uncertainty when modeling plasmas that can reach strong coupling regimes, such as hydrodynamic simulations of dense plasmas encountered in the implosion of inertial confinement fusion (ICF) targets.…”

Section: Introductionmentioning

confidence: 99%

Testing thermal conductivity models with equilibrium molecular dynamics simulations of the one-component plasma

Scheiner

2019

Phys. Rev. E

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Equilibrium molecular dynamics simulations are used to calculate the thermal conductivity of the one component plasma (OCP) via the Green-Kubo formalism over a broad range of Coulomb coupling strength, 0.1 ≤ Γ ≤ 180. These simulations address previous discrepancies between computations using equilibrium versus nonequilibrium methods. Analysis of heat flux autocorrelation functions show that very long (6 × 10 5 ω −1 p ) time series are needed to reduce the noise level to allow 2% accuracy. The new simulations provide the first accurate data for Γ 1. This enables a test of the traditional Landau-Spitzer theory, which is found to agree with the simulations for Γ 0.3. It also enables tests of theories to address moderate and strong Coulomb coupling. Two are found to provide accurate extensions to the moderate coupling regime of Γ 10, but none are accurate in the Γ 10 regime where potential energy transport and coupling between mass flow and stress dominate thermal conduction.

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Thermal Conductivity of the Classical Electron One-Component Plasma

Cited by 26 publications

References 23 publications

Anomalous dynamical scaling in anharmonic chains and plasma models with multiparticle collisions

Anomalous dynamical scaling in anharmonic chains and plasma models with multiparticle collisions

Quantum molecular dynamics simulations of transport properties in liquid and dense-plasma plutonium

Testing thermal conductivity models with equilibrium molecular dynamics simulations of the one-component plasma

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