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Journal Articles EPJ Web of Conferences Year : 2017

Shear Viscosity of Liquid Potassium and Cesium: a Simulation Study

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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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hal-02921769 , version 1 (25-08-2020)

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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, 2017, 151, pp.04001. ⟨10.1051/epjconf/201715104001⟩. ⟨hal-02921769⟩
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