X-ray specular reflectivity study of a critical binary fluid mixture.
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.
Marschand
L W
LW
Department of Physics, Northern Illinois University, DeKalb, 60115, USA.
Brown
M
M
Lurio
L B
LB
Law
B M
BM
Uran
S
S
Kuzmenko
I
I
Gog
T
T