Geant4 Monte Carlo study of the relation between image blurring and depth of optical photons produced using kilo-voltage x-rays and micro-columnar scintillators

Moeini, Hossein; Mokari, Mojtaba

doi:10.47176/ijpr.24.4.41878

Geant4 Monte Carlo study of the relation between image blurring and depth of optical photons produced using kilo-voltage x-rays and micro-columnar scintillators

Document Type : Original Article

Authors

Hossein Moeini ¹

Mojtaba Mokari ²

¹ Department of Physics, School of Science, Shiraz University, Shiraz, Iran

² Department of Physics, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran

https://doi.org/10.47176/ijpr.24.4.41878

Abstract

X-ray detectors, which generally enjoy very good detection efficiency and spatial resolution, have many applications including in radiography and basic research. Many of the existing radiographic methods are extremely inefficient and time-consuming, making them improper for real-time applications. A solution to avoid such a problem has been to develop structured scintillation films such as CsI, which have high density and fast response, and at the same time, have the possibility of being grown as compact micrometer structures – suggesting a way to attain better image qualities. Employing the Geant4 Monte Carlo toolkit, we have used a simple geometry to serve as a radiography system, which includes a polymer layer as a camera, a structured layer of micro-columnar scintillators as x-ray converters, and an aluminum layer as a light reflector. Hence, for pencil-beam x-rays we investigated the dependence of blurring on the production depth of the resulting optical photons.

Keywords

image blurring

kilo-voltage x-ray

micro-columnar scintillator

optical photons

Geant4 Monte Carlo code

Subjects

Nuclear Physics

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