Abstract
A molecular dynamics simulation of the collision of an argon atom with a neutral cluster Ar n (n ≤ 400) in an equilibrium system at a temperature of T = 20–35 K has been performed using the classical trajectory method. It has been shown that the total capture cross section under these conditions exceeds the limiting value obtained in the hard-sphere model and approaches it very slowly with an increase in n and T. At the same time, the simulation results are in agreement with the Langevin capture cross section for an atom in the Gspann-Vollmar potential, particularly with allowance for the dependence of the capture probability on the collision rate.
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Original Russian Text © D.Yu. Dubov, 2011, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2011, Vol. 94, No. 10, pp. 838–842.
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Dubov, D.Y. Capture of an atom by an argon cluster: Atomistic simulation. Jetp Lett. 94, 774–778 (2012). https://doi.org/10.1134/S0021364011220048
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DOI: https://doi.org/10.1134/S0021364011220048