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Shear Viscosity of Liquid Potassium and Cesium: a Simulation Study

Abstract : The density and temperature dependences of the shear viscosity of liquid potassium and cesium are studied. The stress autocorrelation function is calculated from equilibrium molecular dynamics simulations. Using the Green-Kubo formula, the shear viscosity is obtained. Interionic interactions are calculated by Fiolhais potential and are validated by comparison between simulation and experimental data along the liquid-gas coexistence curve for K and Cs. For both metals, three isochors and one isotherm are investigated. The recently proposed relation in [Phys. Rev. B 93, 214203 (2016)] is tested in the cases of K and Cs and it appears that this function reproduces qualitatively and quantitatively well the behavior of each element.
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Contributor : Jean-François Wax Connect in order to contact the contributor
Submitted on : Tuesday, August 25, 2020 - 2:55:19 PM
Last modification on : Monday, September 6, 2021 - 5:17:07 PM

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Nadège Meyer, Hong Xu, Jean-François Wax. Shear Viscosity of Liquid Potassium and Cesium: a Simulation Study. EPJ Web of Conferences, EDP Sciences, 2017, 151, pp.04001. ⟨10.1051/epjconf/201715104001⟩. ⟨hal-02921769⟩



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