Improving Ce3+ doped scintillating materials for medical imaging applications

Samuel Blahuta; Bruno Viana; Aurélie Bessière; Didier Gourier; Vladimir Ouspenski

doi:10.1117/12.2006639

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11 March 2013 Improving Ce³⁺ doped scintillating materials for medical imaging applications

Samuel Blahuta, Bruno Viana, Aurélie Bessière, Didier Gourier, Vladimir Ouspenski

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Proceedings Volume 8621, Optical Components and Materials X; 86210N (2013) https://doi.org/10.1117/12.2006639
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

Ce:LYSO (Lu_1.90Y_0.1SiO_5:Ce) single crystals were prepared by the Czochralski technique. We report some effects of the X-ray irradiation on the shape of the emission spectra. For instance a large decrease of the longest wavelength emission (at about 500 nm) is observed with an increase of the light yield after one hour under X-ray irradiation. Electron paramagnetic resonance (EPR) evidences no change in the two cerium site occupancy along with the irradiation time. A mechanism taking into account the evolution of the oxygen vacancies as neighbors of Ce³⁺ ions is proposed.

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Samuel Blahuta, Bruno Viana, Aurélie Bessière, Didier Gourier, and Vladimir Ouspenski "Improving Ce³⁺ doped scintillating materials for medical imaging applications", Proc. SPIE 8621, Optical Components and Materials X, 86210N (11 March 2013); https://doi.org/10.1117/12.2006639

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