Vol. 28, issue 02, article # 5

Zhilkin S.V., Kharlamov G.V. Investigation of the diffusion of Lennard-Jones particles in phase transition conditions by the molecular dynamics method. // Optika Atmosfery i Okeana. 2015. V. 28. No. 02. P. 138-142 [in Russian].
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In this paper, we have calculated the diffusion coefficients of the Lennard-Jones gas in a wide range of density and temperature. A universal dependence of the diffusion coefficients on the density for homogeneous systems was found. A deviation from this dependence in terms of the vapor – liquid phase transition was obtained. Two relaxation phases of autocorrelation velocity function of the system in terms of the phase transition were analyzed and explained.


diffusion coefficient, Lennard-Jones potential, phase transition, autocorrelation function of the velocity


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