Approach tq complete wetting in 4He-3He binary liquid mixtures
نویسندگان
چکیده
We reanalyse an experimental work, including some unpublished results, on the adsorption of 4He atoms on a substrate in a 4He-3He mixture. We verify with remarkable accuracy the powerlaw dependence of the 4He adsorption thickness as a function of the distance AT to coexistence : e = C1/ (0394T) 1/3, for thicknesses e ranging from 20 to 80 Å (5 to 20 atomic layers). The analysis is made possible by the great purity of the sample and the accuracy ( 1 Å) of the capacitive experimental method. The coefficient C1 and correction to the leading behaviour are derived using both a thermodynamic model and the Cahn approach. J. Physique 47 (1986) 1951-1960 NOVEMBRE 1986, Classification Physics Abstracts 67.60-68.107-68.45D
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