Capture of an atom by an argon cluster: Atomistic simulation |
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Authors: | D. Yu. Dubov |
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Affiliation: | 1.Kutateladze Institute of Thermophysics, Siberian Branch,Russian Academy of Sciences,Novosibirsk,Russia |
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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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