Surface roughness of water measured by x-ray reflectivity

A. Braslau, M. Deutsch, P. S. Pershan, A. H. Weiss, J. Als-Nielsen, J. Bohr

Research output: Contribution to journalArticlepeer-review

386 Scopus citations

Abstract

The roughness of the liquid-vapor interface for pure water was measured by a technique of x-ray reflectivity. With synchrotron radiation (λ∼1.5 A), the angular dependence of the x-ray reflectivity was measured from grazing incidence (∼0.0021 rad), where the reflectivity was greater than 0.96, to an incident angle of ∼0.05 rad, where the reflectivity was ∼7×10-8. A fit to the data by a theory with only one adjustable parameter obtains 3.2 A for the root-mean-square roughness of the water surface.

Original languageEnglish
Pages (from-to)114-117
Number of pages4
JournalPhysical Review Letters
Volume54
Issue number2
DOIs
StatePublished - 1985

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