title: X-ray specular reflectivity study of a critical binary fluid mixture.
abstract: We have used direct inversion of x-ray reflectivity data to extract the liquid-vapor interface composition profile and the related critical scaling function of a binary mixture of dodecane and tetrabromoethane. The mixture was in the one-phase region above its critical point. The results indicate the formation of a monolayer of the lower surface tension component followed by an abrupt change to a mixed composition which gradually relaxes to the bulk composition deep within the fluid.
authors.affiliation: Department of Physics, Northern Illinois University, DeKalb, 60115, USA.
authors.forename: L W
authors.initials: LW
authors.lastname: Marschand
authors.forename: M
authors.initials: M
authors.lastname: Brown
authors.forename: L B
authors.initials: LB
authors.lastname: Lurio
authors.forename: B M
authors.initials: BM
authors.lastname: Law
authors.forename: S
authors.initials: S
authors.lastname: Uran
authors.forename: I
authors.initials: I
authors.lastname: Kuzmenko
authors.forename: T
authors.initials: T
authors.lastname: Gog