Enhancement of X-ray reflectometry by measurement of diffuse...

X-ray or gamma ray systems or devices – Specific application – Diffraction – reflection – or scattering analysis

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C378S089000

Reexamination Certificate

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07068753

ABSTRACT:
A method for inspection of a sample having a surface layer. The method includes acquiring a first reflectance spectrum of the sample while irradiating the sample with a collimated beam of X-rays, and processing the first reflectance spectrum to measure a diffuse reflection property of the sample. A second reflectance spectrum of the sample is acquired while irradiating the sample with a converging beam of the X-rays. The second reflectance spectrum is analyzed using the diffuse reflection property so as to determine a characteristic of the surface layer of the sample.

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