Molecular Dynamcics simulations of superthermal kinetic energies of He atoms evaporating from dodecane

Mark Williams; Sven P K Koehler

doi:10.1016/j.cplett.2015.04.008

Molecular Dynamcics simulations of superthermal kinetic energies of He atoms evaporating from dodecane

Mark Williams, Sven P K Koehler

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Abstract

The velocity distribution of He atoms evaporating from a slab of liquid dodecane has been simulated. The distribution composed of ∼10 000 He trajectories is shifted to fractionally faster velocities as compared to a Maxwell–Boltzmann distribution at the temperature of the liquid dodecane with an average translational energy of 1.05 × 2RT (or 1.08 × 2RT after correction for a cylindrical liquid jet), compared to the experimental work by Nathanson and co-workers (1.14 × 2RT) on liquid jets. Analysis of the trajectories allows us to infer mechanistic information about the modes of evaporation, and their contribution to the overall velocity distribution.

Original language	English
Pages (from-to)	53-57
Number of pages	4
Journal	Chemical Physics Letters
Volume	629
DOIs	https://doi.org/10.1016/j.cplett.2015.04.008
Publication status	Published - 15 Apr 2015

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title = "Molecular Dynamcics simulations of superthermal kinetic energies of He atoms evaporating from dodecane",

abstract = "The velocity distribution of He atoms evaporating from a slab of liquid dodecane has been simulated. The distribution composed of ∼10 000 He trajectories is shifted to fractionally faster velocities as compared to a Maxwell–Boltzmann distribution at the temperature of the liquid dodecane with an average translational energy of 1.05 × 2RT (or 1.08 × 2RT after correction for a cylindrical liquid jet), compared to the experimental work by Nathanson and co-workers (1.14 × 2RT) on liquid jets. Analysis of the trajectories allows us to infer mechanistic information about the modes of evaporation, and their contribution to the overall velocity distribution.",

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N2 - The velocity distribution of He atoms evaporating from a slab of liquid dodecane has been simulated. The distribution composed of ∼10 000 He trajectories is shifted to fractionally faster velocities as compared to a Maxwell–Boltzmann distribution at the temperature of the liquid dodecane with an average translational energy of 1.05 × 2RT (or 1.08 × 2RT after correction for a cylindrical liquid jet), compared to the experimental work by Nathanson and co-workers (1.14 × 2RT) on liquid jets. Analysis of the trajectories allows us to infer mechanistic information about the modes of evaporation, and their contribution to the overall velocity distribution.

AB - The velocity distribution of He atoms evaporating from a slab of liquid dodecane has been simulated. The distribution composed of ∼10 000 He trajectories is shifted to fractionally faster velocities as compared to a Maxwell–Boltzmann distribution at the temperature of the liquid dodecane with an average translational energy of 1.05 × 2RT (or 1.08 × 2RT after correction for a cylindrical liquid jet), compared to the experimental work by Nathanson and co-workers (1.14 × 2RT) on liquid jets. Analysis of the trajectories allows us to infer mechanistic information about the modes of evaporation, and their contribution to the overall velocity distribution.

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DO - 10.1016/j.cplett.2015.04.008

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VL - 629

SP - 53

EP - 57

JO - Chemical Physics Letters

JF - Chemical Physics Letters

ER -

Molecular Dynamcics simulations of superthermal kinetic energies of He atoms evaporating from dodecane

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