Abstract

Specular reflectivity of neutrons and x rays can be used to determine the scattering length density profile of a material perpendicular to its surface. We have applied these techniques to study amorphous, diamondlike, hydrocarbon films. By the combination of these two techniques we obtain not only the mass density, but also the concentration of hydrogen, which varies in our case between 0 and 30 at. %. This method is a new and nondestructive way to determine the concentration of hydrogen within an error of less than 2 at. % in samples with sharp interfaces. It is especially suited for diamondlike carbon films.

Keywords

X-ray reflectivitySpecular reflectionHydrogenMaterials scienceCarbon fibersNeutronCarbon filmScatteringPerpendicularOpticsAmorphous solidThin filmAnalytical Chemistry (journal)ChemistryCrystallographyNanotechnologyPhysicsComposite materialNuclear physics

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Publication Info

Year
1994
Type
article
Volume
76
Issue
8
Pages
4636-4642
Citations
39
Access
Closed

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Cite This

E. Findeisen, R. Feidenhans’l, Martin E. Vigild et al. (1994). Hydrogen concentration and mass density of diamondlike carbon films obtained by x-ray and neutron reflectivity. Journal of Applied Physics , 76 (8) , 4636-4642. https://doi.org/10.1063/1.357300

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DOI
10.1063/1.357300