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Issue 45, 2014
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Light yield sensitization by X-ray irradiation of the BaAl4O7:Eu2+ceramic scintillator obtained by full crystallization of glass

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Abstract

We report the scintillation properties of BaAl4O7:Eu2+, a transparent polycrystalline ceramic prepared by full and congruent crystallization of glass. We show that a small deviation from the stoichiometric composition as well as thermal treatment duration play a crucial role in the formation of charge carrier traps, leading to a strong influence on the scintillation yield. We demonstrate that when the traps are not entirely removed, X-ray irradiation allows them to be permanently filled in order to significantly enhance the scintillation output. Finally, the best sample obtained demonstrates performances able to compete with a commercially available scintillating material, CsI:Tl.

Graphical abstract: Light yield sensitization by X-ray irradiation of the BaAl4O7:Eu2+ceramic scintillator obtained by full crystallization of glass

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Publication details

The article was received on 10 Sep 2014, accepted on 09 Oct 2014 and first published on 09 Oct 2014


Article type: Paper
DOI: 10.1039/C4CP04064C
Author version available: Download Author version (PDF)
Citation: Phys. Chem. Chem. Phys., 2014,16, 24824-24829
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    Light yield sensitization by X-ray irradiation of the BaAl4O7:Eu2+ceramic scintillator obtained by full crystallization of glass

    G. Patton, F. Moretti, A. Belsky, K. Al Saghir, S. Chenu, G. Matzen, M. Allix and C. Dujardin, Phys. Chem. Chem. Phys., 2014, 16, 24824
    DOI: 10.1039/C4CP04064C

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