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Effects of Calcium Codoping on Charge Traps in LSO:Ce Crystals
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK), Inorganic and Structural Chemistry.
2009 (English)In: IEEE Transactions on Nuclear Science, ISSN 0018-9499, E-ISSN 1558-1578, Vol. 56, no 5, 2960-2965 p.Article in journal (Refereed) Published
Abstract [en]

Experimental studies of Lu2SiO5 : Ce (LSO:Ce) crystals codoped with various concentrations of Ca (0, 0.1, 0.2, 0.3, and 0.4 at% in the melt) are presented. The scintillation and optical properties including photoluminescence decay, emission, excitation, absorption, afterglow and thermoluminescence properties are investigated as a function of Ca concentration. Experimental data show Ca codoping significantly reduces the trapped charge population in the crystal matrix. Hence, the scintillation decay time of LSO:Ce is shortened and the afterglow is suppressed. Thermoluminescence studies show a strong correlation between the integrated thermoluminescence intensity and the Ca concentration.

Place, publisher, year, edition, pages
2009. Vol. 56, no 5, 2960-2965 p.
Keyword [en]
Calcium, codoping, Lu2SiO5 (LSO), scintillation
National Category
Natural Sciences
URN: urn:nbn:se:su:diva-59676DOI: 10.1109/TNS.2009.2027018ISI: 000271100600025OAI: diva2:430340
authorCount :4Available from: 2011-07-08 Created: 2011-07-05 Last updated: 2011-07-08Bibliographically approved

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Eriksson, Lars
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