2016/10/20 by Ariadna Mendoza Cuevas, Cuevas, Ariadna Mendoza, Dorta-Duque, Jorge Fernandez-de-Cossio
Arts and Humanities · Computer Science · Physics and Astronomy · #Cultural Heritage Materials Analysis #FOS: Physical sciences #Geochemistry and Geologic Mapping #Instrumentation and Detectors (physics.ins-det) #X-ray Spectroscopy and Fluorescence Analysis
paper · pdf · doi:10.48550/arxiv.1610.06295
openalex publication_date 2016/10/20 · openalex created_date 2022/09/05 · openalex updated_date 2026/07/28
Low power energy dispersive XRD-XRF portable instruments equipped with\nmultiple angle scanning can take advantage of the shorter acquisition time of\nEDXRD with respect to ADXRD, and bring closer higher accuracy and resolution of\ninter-planar distance with those obtained by ADXRD. The data produced by this\nnew hybrid configuration is correlated in the sense that a single XRF or XRD\nspecimen appear in multiple spectra (the later shifted in energy for differing\nangles). Hence, for fully benefit from the richer data released by this\nconfiguration, the analysis should not be confined to the independent\nprocessing of the spectra, specialized hybrid data processing should be\nconceived. We previously reported some advances in the processing of the\nresulting 3D data (intensity, energy and angle). Here the analytical\nperformance of the first hybrid angle-energy dispersive X-ray diffraction and\nfluorescence portable system is assessed for non-invasive surface mineral\nanalysis of samples relevant for archaeometrical applications. We evaluate the\nperformance on standard reference material and probe applicability of the\nmethods so developed to identify stones (jadeite and omphacite), and pigments\n(Prussian blue) in the pictorial layer of modeled paintings. Discussion\nemphasize the improvement in accuracy of interplanar distance with respect to\nEDXRD taken at a single fixed angles, evaluate the resolution of AD/EDXRD data,\nand total acquisition time.\n