Nowak, Stanislaw H. Banaś, D. Błachucki, Wojciech Cao, Wei Dousse, Jean-Claude Hönicke, P. Hoszowska, Joanna Jabłoński, Ł. Kayser, Yves Kubala-Kukuś, A. Pajek, M. Reinhardt, F. Savu, A.V. Szlachetko, Jakub 2014-08-01 Various 3-dimensional nano-scaled periodic structures with different configurations and periods deposited on the surface of silicon and silica substrates were investigated by means of the grazing incidence and grazing emission X-ray fluorescence techniques. Apart from the characteristics which are typical for particle- and layer-like samples, the measured angular intensity profiles show additional periodicity-related features. The latter could be explained by a novel theoretical approach based on simple geometrical optics (GO) considerations. The new GO-based calculations were found to yield results in good agreement with experiment, also in cases where other theoretical approaches are not valid, e.g., periodic particle distributions with an increased surface coverage. application/pdf https://folia.unifr.ch/global/documents/303784 https://folia.unifr.ch/documents/303784/files/dou_gax.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1016/j.sab.2014.03.015 info:eu-repo/semantics/openAccess License undefined Spectrochimica Acta Part B: Atomic Spectroscopy. - 2014, vol. 98, p. 65-75 GEXRF GIXRF Geometrical optics info:eu-repo/classification/udc/53 Grazing angle X-ray fluorescence from periodic structures on silicon and silica surfaces http://purl.org/coar/resource_type/c_6501