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Dynamical transportation of Si particles produced by pulsed laser ablation in the mixture of two inert gases

Dynamical transportation of Si particles produced by pulsed laser ablation in the mixture of two inert gases

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Assuming the ambient atoms and ablated particles are elastic hard-spheres, the transportation of Si particles produced by single-pulsed laser ablation in the mixture of two inert gases is numerically simulated via Monte Carlo method. The influence of the mixed atomic ratio (MAR) of the two gases on the oscillating stabilisation time (OST) of the high density mixed region of Si vapour and ambient gas is investigated. The result shows that the MAR, satisfying that average atomic mass of the ambient sufficiently approaches to Si atomic mass, induces the shortest OST and therefore the smallest average size of Si nanoparticles, as indicated in the previous experimental observation.

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