Elemental mapping of Portuguese ceramic pieces with a full-field XRF scanner based on a 2D-THCOBRA detector
| Autor: | J.F.C.A. Veloso, Patrícia Miguel da Silva Carvalho, Sofia Pessanha, Fábio Leite, Aniceto Silva, Maria Luisa de Carvalho, José Paulo Santos |
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| Přispěvatelé: | DF – Departamento de Física, LIBPhys-UNL |
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Physics Scanner Physics::Instrumentation and Detectors business.industry Astrophysics::High Energy Astrophysical Phenomena 010401 analytical chemistry Resolution (electron density) Detector General Physics and Astronomy Full field Physics and Astronomy(all) 01 natural sciences 0104 chemical sciences Full width at half maximum Optics visual_art 0103 physical sciences visual_art.visual_art_medium Ceramic business Image resolution Energy (signal processing) |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 2190-5444 |
| DOI: | 10.1140/epjp/s13360-021-01422-y |
| Popis: | In this work, we present a novel application of the full-field energy-dispersive X-ray fluorescence (EDXRF) imaging system based on a MicroPattern Gaseous Detector (2D-THCOBRA) in the cultural heritage field. The detector has an intrinsic imaging capability with spatial resolution of $$400\,{\upmu }\mathrm { m}\ \mathrm {FWHM}$$ , and is energy sensitive, presenting an energy resolution of approximately $$1\ \mathrm {keV\ FWHM}$$ at $$5.9\ \mathrm {keV}$$ . The full-field XRF scanner based on the 2D-THCOBRA detector allows mapping the distribution of elements in large area samples with high detection efficiency ( $$75\%$$ at $$5.9\ \mathrm {keV}$$ ), being a very promising choice for elemental mapping analysis of large area cultural heritage samples. In this work, we have demonstrated the imaging capabilities of the full-field XRF scanner and used it to assess the restoration of a Portuguese faience piece. |
| Databáze: | OpenAIRE |
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