Thermal Properties of the Second Layer of Adsorbed 3He
Measurements were made of the specific heats of 3He films with thicknesses between one and two atomic layers. The adsorbent was Vycor porous glass on which previous experiments1 have shown that the first adsorbed layer possesses a specific heat proportional to T 2, which is indicative of a two-dimensional solid. The measurements presented here were obtained with five different fractions of the second layer ranging from one-fourth up to the completed layer; the results are shown in Fig. 1. No evaporation corrections have been made on these data. As can be seen, the specific heats of successively higher coverages attain the same values at progressively lower temperatures, and this most probably is due to the second layer possessing a larger specific heat than the first.
KeywordsEffective Mass Isosteric Heat Measurable Vapor Pressure Specific Heat Coefficient Helium Layer
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- 4.A. J. Symonds, thesis, Univ. of Sussex, England.Google Scholar