The density distribution normal to the liquid–vapor interface of a bismuth–gallium mixture (0.18% Bi and 99.82% Ga) has been studied by measurement of the x-ray reflectivity as a function of angle of incidence. The data obtained confirm the predicted stratification of the density distribution along the normal to the interface and the segregation of the excess surface concentration of Bi into a monolayer atop the bulk mixture.
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Lei et al. (1996) studied this question.
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