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Development of a Macro X-ray Fluorescence (MA-XRF) Scanner System for In Situ Analysis of Paintings That Operates in a Static or Dynamic Method

2024; Multidisciplinary Digital Publishing Institute; Volume: 8; Issue: 4 Linguagem: Inglês

10.3390/qubs8040026

2412-382X

Renato Pereira de Freitas, Miguel Andrade de Oliveira, Matheus B. de Oliveira, André Rocha Pimenta, Valter S. Felix, Marcelo O. Pereira, Elicardo Alves de Souza Gonçalves, João V. L. Grechi, Fabrício Lopes e Silva, Cristiano Carvalho, Jonas Gabriel Ramos da Silva Ataliba, Leandro de Oliveira Pereira, Lucas Gabriel dos Santos Muniz, Robson B. dos Santos, Vitor da S. Vital,

Building materials and conservation

This work presents the development of a macro X-ray fluorescence (MA-XRF) scanner system for in situ analysis of paintings. The instrument was developed to operate using continuous acquisitions, where the module with the X-ray tube and detector moves at a constant speed, dynamically collecting spectra for each pixel of the artwork. Another possible configuration for the instrument is static acquisitions, where the module with the X-ray tube and detector remains stationary to acquire spectra for each pixel. The work also includes the analytical characterization of the system, which incorporates a 1.00 mm collimator that allows for a resolution of 1.76 mm. Additionally, the study presents the results of the analysis of two Brazilian paintings using this instrument. The elemental maps obtained enabled the characterization of the pigments used in the creation of the artworks and materials used in restoration processes.