Portable grazing exit X-ray fluorescence system using a low-power X-ray tube

Ramon Silva dos Santos; Davi Ferreira de Oliveira; Joaquim Teixeira de Assis; Marcelino José dos Anjos

doi:10.15392/bjrs.v7i2A.714

Authors

Ramon Silva dos Santos State University of Rio de Janeiro
Davi Ferreira de Oliveira State University of Rio de Janeiro
Joaquim Teixeira de Assis State University of Rio de Janeiro
Marcelino José dos Anjos State University of Rio de Janeiro

DOI:

https://doi.org/10.15392/bjrs.v7i2A.714

Keywords:

GE-XRF, Portable system, Trace elements analysis

Abstract

In this work was developed a portable system of grazing exit X-ray fluorescence (geometric 90° - 0°) that can be applied in several areas science and technology. GE-XRF portable system is formed by a mini X-ray tube of low power (anode of Au) and a SiPIN detector. The reflectors used as sample support (sampler carrier) were quartz discs. The grazing exit angle was experimentally determined by measuring a cooper solution (10 μg.g^-1). The accuracy of the system was checked using multielement reference solution as standard reference material. The relative errors between measured and certified values are in the range of 4 to 19%. The first results showed a background was drastically reduced at grazing exit angles, enabling trace elemental analysis. The system of GE-XRF proved to be quite stable and reproducible. This paper shows that it is possible to produce a portable system of grazing exit X-ray fluorescence compact, efficient, low-cost and easy-to-handle instrumentation using a low power X-ray tube and a SiPIN compact detector.

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Author Biographies

Ramon Silva dos Santos, State University of Rio de Janeiro

Physics Institute
Davi Ferreira de Oliveira, State University of Rio de Janeiro

Physics Institute
Joaquim Teixeira de Assis, State University of Rio de Janeiro

Polytechnic Institute
Marcelino José dos Anjos, State University of Rio de Janeiro

Physics Institute

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