Adsorption of 3He on cesium surfaces

Vapor pressure isotherms of 3He on Cs are reported which show that, in contrast to 4He, 3He wets Cs for 1.26 K < T < 2K. Although the isotherms are distinctly different from those taken on strong binding substrates, the authors have observed no evidence for a first order prewetting transition. The data suggest that the prewetting critical point is substantially below T = 1.26 K