A low-cost portable system for elemental mapping by XRF aiming in situ analyses
| Autor: | R.F. Assis, Nemitala Added, Manfredo Harri Tabacniks, Carlos Roberto Appoloni, H.C. Santos, Marcia de Almeida Rizzutto, P.H.O.V. Campos, A. R. Leite, C. L. Rodrigues, Tiago Fiorini da Silva |
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| Rok vydání: | 2019 |
| Předmět: |
In situ
Radiation Instrumentation Detector Nondestructive analysis Resolution (electron density) 010403 inorganic & nuclear chemistry 01 natural sciences 030218 nuclear medicine & medical imaging 0104 chemical sciences 03 medical and health sciences 0302 clinical medicine Environmental science Stage (hydrology) Image resolution Remote sensing |
| Zdroj: | Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine. 152 |
| ISSN: | 1872-9800 |
| Popis: | This work presents the development of a portable system that allows 2D elemental mapping of large areas (maximum of 35.0 × 35.0 cm2) by XRF. A measuring head, composed of an x-ray source and a detector, is mounted on a 3-axis stage with movement reproducibility better that 0.03 mm. The final elemental map resolution of 1.4 mm was experimentally determined in the best condition of collimation, and the same experiments indicate that the resolution is fully dominated by the x-ray beam spot size. The main goal of this new setup is to perform analyses of historical, archaeological and geological objects. Because it's lightweight, our setup has the potential to be of great utility for in situ analyses, given the great difficulty and high costs transporting the artifacts from the museum to a laboratory. The importance of this instrumentation is related to the need to identify the distribution of the chemical elements in large surface areas of cultural heritage objects by a nondestructive method. |
| Databáze: | OpenAIRE |
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