In this paper different sol gel syntheses strategies are adopted in order to produce Ce - doped silica - glasses scintillators with improved properties. Variations on the synthesis procedure are adopted to reduce the hydroxyl content of the sol gel glass; to this purpose, a fluorine derivative of silicon alkoxide was added in the sol gel reaction. Since a drawback of Ce - doped sol gel glasses is the partial oxidation of Ce3+ to Ce4+ in the matrix probably occurring during the sintering procedure, both Ce - doped xerogel and fluorinated xerogel were treated under reducing atmosphere (H 2:Ar) instead of the usual oxidizing atmosphere. Glasses obtained in such ways are compared with commercial synthetic glasses and with previously produced sol gel samples by spectroscopic IR absorption measurements, and by radio-luminescence experiments.

Chiodini, N., DI MARTINO, D., Fasoli, M., Lauria, A., Moretti, F., Vedda, A. (2006). Ce-doped SiO2 glass as scintillating material: Variation on the synthesis procedure for the improvement of material properties. In Proceedings of SPIE - The International Society for Optical Engineering. SPIE [10.1117/12.679431].

Ce-doped SiO2 glass as scintillating material: Variation on the synthesis procedure for the improvement of material properties

CHIODINI, NORBERTO;DI MARTINO, DANIELA;FASOLI, MAURO;LAURIA, ALESSANDRO;MORETTI, FEDERICO;VEDDA, ANNA GRAZIELLA
2006

Abstract

In this paper different sol gel syntheses strategies are adopted in order to produce Ce - doped silica - glasses scintillators with improved properties. Variations on the synthesis procedure are adopted to reduce the hydroxyl content of the sol gel glass; to this purpose, a fluorine derivative of silicon alkoxide was added in the sol gel reaction. Since a drawback of Ce - doped sol gel glasses is the partial oxidation of Ce3+ to Ce4+ in the matrix probably occurring during the sintering procedure, both Ce - doped xerogel and fluorinated xerogel were treated under reducing atmosphere (H 2:Ar) instead of the usual oxidizing atmosphere. Glasses obtained in such ways are compared with commercial synthetic glasses and with previously produced sol gel samples by spectroscopic IR absorption measurements, and by radio-luminescence experiments.
abstract + slide
Glasses optical materials; Sol-gel processing; X-ray detector
English
SPIE - Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIII
2006
Proceedings of SPIE - The International Society for Optical Engineering
978-081946398-2
2006
6319
none
Chiodini, N., DI MARTINO, D., Fasoli, M., Lauria, A., Moretti, F., Vedda, A. (2006). Ce-doped SiO2 glass as scintillating material: Variation on the synthesis procedure for the improvement of material properties. In Proceedings of SPIE - The International Society for Optical Engineering. SPIE [10.1117/12.679431].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/27922
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