Capillary-wave model of gas-liquid exchange

Article Abstract:

A capillary-wave model is used in interpreting nucleation data in the accommodation of a solute gas by a liquid. It is used in computing the rate at which an adsorbed molecule is overwhelmed by the liquid surface through elementary statistical mechanics. The research demonstrates that the free energy diagram can also be derived from the capillary-wave model. Capillary waves are waves in which the restoring force is provided solely by surface tension. Their spectrum extends from macroscopic wavelengths to molecular dimensions but they are strongly damped by viscosity at short wavelengths.

Models, Adsorption, Gas dynamics, Gasdynamics

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Maxwell versus non-Maxwell velocity distributions for molecules emitted from a liquid surface

Article Abstract:

Research was conducted to examine the nature of the velocity distribution for molecules emitted from a liquid surface. Of the various forms of Maxwell distribution that were used for the molecules evaporating from a liquid surface, the best one to use was the distribution for effusion through a small hole. Comparisons of the observed and calculated angular dependence of alpha at high collision energy favor the form with the cos2 theta factor over the form with cos theta.

Analysis, Liquids, Molecules, Maxwell equations

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Surface correlations and exchange at a spherical liquid interface

Article Abstract:

A new derivation of the rms displacement and slope of the surface of a spherical drop in the presence of thermally excited capillary waves is presented. This work includes a discussion of the rate at which a surface molecule is engulfed by the bulk liquid.

Surface chemistry

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