Abstract
It is well known that light is reflected and transmitted with a change in the direction of propagation at an interface between two media which have different optical properties. The effects known as reflection and refraction are easy to observe in the visible spectrum but more difficult when x-ray radiation is used (see the introduction for a historical presentation). The major reason for this is the fact that the refractive index of matter for x-ray radiation does not differ very much from unity, so that the direction of the refracted beam does not deviate much from the incident one. The reflection of x-rays is however of great interest in surface science, since it allows the structure of the uppermost layers of a material to be probed. In this chapter, we present the general optical formalism used to calculate the reflectivity of smooth or rough surfaces and interfaces which is also valid for x-rays.
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Gibaud, A. (1999). Specular Reflectivity from Smooth and Rough Surfaces. In: X-ray and Neutron Reflectivity: Principles and Applications. Lecture Notes in Physics Monographs, vol 58. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-48696-8_3
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DOI: https://doi.org/10.1007/3-540-48696-8_3
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