Metal location and thickness in a multilayered sheet by measuring Kα/Kβ, Lα/Lβ and Lα/Lγ X-ray ratios |
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| Authors: | Roberto Cesareo Marcia A Rizzutto Antonio Brunetti Donepudi V Rao |
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| Affiliation: | aDip. di Matematica e Fisica, Università di Sassari, via Vienna 2, 07100 Sassari, Italy;bInstituto de Fisica, Universidade de São Paulo, CEP 0558-090, São Paulo, Brazil;cDept. of Physics, SIR CRR Autonomous College, Eluru, AP, India |
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| Abstract: | When a multilayered material is analyzed by means of energy-dispersive X-ray fluorescence analysis, then the X-ray ratios of Kα/Kβ, or Lα/Lβ and Lα/Lγ, for an element in the multilayered material, depend on the composition and thickness of the layer in which the element is situated, and on the composition and thickness of the superimposed layer (or layers).Multilayered samples are common in archaeometry, for example, in the case of pigment layers in paintings, or in the case of gilded or silvered alloys. The latter situation is examined in detail in the present paper, with a specific reference to pre-Columbian alloys from various museums in the north of Peru. |
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| Keywords: | Energy-dispersive X-ray fluorescence Kα /Kβ Lα /Lβ and Lα /Lγ -ratios Pigment layers Gilded alloys Silvered alloys |
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