Characterization of an energy dispersive X-ray fluorescence imaging system based on a Micropattern Gaseous Detector

• Autor(a) principal: Silva, A. L. M.
• Data de Publicação: 2011
• Outros Autores: Azevedo, C. D. R., Oliveira, C. A. B., Santos, J. M. F. dos, Carvalho, M. L., Veloso, J. F. C. A.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10316/20042; https://doi.org/10.1016/j.sab.2011.03.002
• topic: Gaseous detector; X-ray fluorescence; Spatial resolution; Energy Resolution; Energy Linearity

An Energy Dispersive X-ray Fluorescence (EDXRF) imaging system based on a Micropattern Gas Detector has already shown good results for di erent applications. An X-ray tube, a pinhole camera and a Micro-Hole and Strip Plate (MHSP) based detector are the main components of the experimental system. The detector uses an MHSP in a Xe atmosphere at 1 bar, acting as a photon counting device, i.e., it is capable to record each single event retaining the energy and the interaction position (2D-sensitive detector) information of the incident photon, demonstrating to be a promising device for EDXRF imaging applications. This work presents studies of energy resolution, energy linearity and spatial resolution/elemental mapping as a function of image magni cation of the system.