I Kuscer and M Robnik 1980 J. Phys. A: Math. Gen. 13 621 doi:10.1088/0305-4470/13/2/025
I Kuscer and M Robnik
Show affiliationsThe concept of the evaporation coefficient sigma is examined on the basis of a semi-microscopic picture, where the gas molecules are treated individually while the liquid is described as a continuum. The incident and emitted molecules create surface fluctuations in the form of spreading hot and cold spots, which give rise to apparent long-lived relaxation in surface scattering. Averaging over the surface, however, eliminates this effect, which therefore does not affect the definition of sigma . If there is any genuine surface scattering that makes sigma smaller than unity, it must be practically instantaneous. By way of further illustration, reflection of sound incident from the vapour is analysed in the same picture. If the sound period is comparable or shorter than the lifetime of the hot and cold spots, a phase lag, and consequently dissipation of energy, results.
Soft matter, liquids and polymers
Issue 2 (1 February 1980)
I Kuscer and M Robnik 1980 J. Phys. A: Math. Gen. 13 621
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