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Growth and characterization of Yb doped garnet crystals for scintillator application |
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| Authors: | Hiraku Ogino Akira Yoshikawa Jong-Ho Lee Martin Nikl Natalia Solovieva Tsuguo Fukuda |
| Affiliation: | a Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;b Institute of Physics AS CR, Cukrovarnicka 10, 16253, Prague, Czech Republic |
| Abstract: | Several concentration of Yb-doped Lu3Al5O12 (Yb:LuAG) and Lu3Ga5O12 (Yb:LGG) single crystals were grown by the micro-pulling-down method. The crystals were seeded-grown in the 1 1 1 direction and transparent and crack free crystals were obtained. Photoluminescence spectra and decay kinetics of these crystals were studied. Charge transfer luminescence of Yb3+ was observed in both crystals. Mean decay time of about 25 ns at 90 K and strong thermal quenching at room temperature was measured for Yb 5%:LuAG. Radioluminescence intensity was compared to the standard BGO sample. |
| Keywords: | Scintillator Yb3+ Charge transfer Micro-pulling-down method Crystal growth from the melt |
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