Abstract
Ni ultra-thin films sandwiched with carbon thin films of different thickness are measured by a laboratory grazing-emission X-ray fluorescence instrument. The Ni Kα intensity of the Ni ultra-thin film sandwiched with carbon layers is three times enhanced in comparison with the Ni ultra-thin film without carbon layers. In addition, oscillations caused by interference effects of directly observed X-ray beams and the reflected X-ray beams on the surface of the Pt substrate, are clearly observed. The periods of the oscillations depends on the thickness of the carbon layer, that is, the position of the Ni layer. Therefore, the thickness of the carbon layer can be estimated.
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