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arXiv · 2404.15044

Optimization of GEM detectors for applications in X-ray fluorescence imaging

Geovane G. A. de Souza·Hugo Natal da Luz·Marco Bregant
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Abstract

In this work a set of simulations that aim at the optimization of gaseous detectors for applications in X-ray fluorescence imaging in the energy range of 3 -- 30keV is presented. By studying the statistical distribution of the radiation interactions with gases, the energy resolution limits after charge multiplication for 6keV X-ray photons in Ar/CO$_2$(70/30) and Kr/CO$_2$(90/10) were calculated, obtaining energy resolutions of 15.4(4)% and 14.6(2)% respectively. The detector design was also studied to reduce the presence of escape peaks and complement a model to evaluate the inevitable X-ray fluorescence of copper generated by the conductive materials inside the detector.

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Geovane G. A. de Souza, Hugo Natal da Luz, Marco Bregant. 2024-04-23. Optimization of GEM detectors for applications in X-ray fluorescence imaging. https://arxiv.org/abs/2404.15044

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