title: Development of a combined portable x-ray fluorescence and Raman spectrometer for in situ analysis.
abstract: In this work, we have built a portable X-ray fluorescence (XRF) spectrometer in a planar configuration coupled to a Raman head and a digital optical microscope, for in situ analysis. Several geometries for the XRF apparatus and digital microscope are possible in order to overcome spatial constraints and provide better measurement conditions. With this combined spectrometer, we are now able to perform XRF and Raman measurements in the same point without the need for sample collection, which can be crucial when dealing with cultural heritage objects, as well as forensic analysis. We show the capabilities of the spectrometer by measuring several standard reference materials, as well as other samples usually encountered in cultural heritage, geological, as well as biomedical studies.
authors.affiliation: Departamento de Física da Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal.
authors.forename: M
authors.initials: M
authors.lastname: Guerra
authors.affiliation: Centro de Física Atómica da Universidade de Lisboa, Av. Prof. Gama Pinto, 2 1649-003 Lisboa, Portugal.
authors.forename: S
authors.initials: S
authors.lastname: Longelin
authors.affiliation: Centro de Física Atómica da Universidade de Lisboa, Av. Prof. Gama Pinto, 2 1649-003 Lisboa, Portugal.
authors.forename: S
authors.initials: S
authors.lastname: Pessanha
authors.affiliation: Centro de Física Atómica da Universidade de Lisboa, Av. Prof. Gama Pinto, 2 1649-003 Lisboa, Portugal.
authors.forename: M
authors.initials: M
authors.lastname: Manso
authors.affiliation: Departamento de Física da Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal.
authors.forename: M L
authors.initials: ML
authors.lastname: Carvalho