Accounting for Secondary Extinction in Thickness Measurement of Thin Films by X-Ray Absorption

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Abstract:

Allowing for secondary extinction (SE), a method is described for thickness measurement of thin films by x-ray absorption. The method is tested by employing Al foils and electrodeposited Cu films detached by the substrate. The thicknesses determined by the method were in fair agreement with that ones measured by the ordinary absorption method based on using incident beam intensities. Moreover, a dependence of the SE coefficient on the transmission factor of the films was experimentally shown, and thus additional light was thrown on the nature of SE.

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Materials Science Forum (Volumes 495-497)

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99-104

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September 2005

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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