Abstract
Adsorption isotherms of3He on cesium substrates have been measured in the temperature range from 0.2 K to 1.5 K. At liquid-vapor coexistence3He wets cesium at all temperatures studied. Step-like features are found in the isotherms which are similar to the prewetting transitions of4He on Cs substrates, but the width of these steps is ∼20 times wider for3He than for4He. In the case of3He on Cs, the steps are located at a chemical potential about 0.6 K below liquid-vapor coexistence. If the low temperature behavior is interpreted to be first order prewetting, the prewetting critical point temperature is 0.6±0.1 K.
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Ross, D., Phillips, J.A., Rutledge, J.E. et al. Adsorption of3He on cesium. J Low Temp Phys 106, 81–92 (1997). https://doi.org/10.1007/BF02403917
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DOI: https://doi.org/10.1007/BF02403917