Characterization of an energy dispersive X-ray fluorescence imaging system base...

• Author(s): Silva, A. L. M. ; Azevedo, C. D. R. ; Oliveira, C. A. B. ; Santos, J. M. F. dos ; Carvalho, M. L. ; Veloso, J. F. C. A.
• Date: 2011
• Persistent ID: http://hdl.handle.net/10316/20042
• Origin: Estudo Geral - Universidade de Coimbra
• Subject(s): Gaseous detector; X-ray fluorescence; Spatial resolution; Energy Resolution; Energy Linearity
• Document Type: Article
• Language: English

Description

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.