Scintillation properties of Pr3+-doped lutetium and yttrium aluminum garnets: Comparison with Ce3+-doped ones |
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Authors: | Jiri A Mares Martin Nikl Alena Beitlerova Karel Blazek Petr Horodysky Karel Nejezchleb Carmelo D’Ambrosio |
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Affiliation: | 1. Institute of Physics, Academy of Sciences of the Czech Republic, Cukrovarnicka 10, 162 53 Prague 6, Czech Republic;2. Crytur Ltd., Palackeho 175, 511 01 Turnov, Czech Republic;3. CERN, PH-LHB group, Geneve 23, CH1211, Switzerland |
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Abstract: | Scintillation properties of Pr3+-doped LuAG and YAG crystals were investigated and compared with those of Ce3+-doped ones. The highest L.Y.’s were observed with the longest shaping time 10 μs. They can reach up to ~16,000 ph/MeV or ~23,500 ph/MeV for LuAG:Pr and LuAG:Ce, respectively. Energy resolutions (FWHM) are a bit better with LuAG:Pr than those of LuAG:Ce, e.g. at 662 keV FWHM are around 6% and between 8–12%, respectively. There were observed no large changes in proportionality of Pr3+- or Ce3+-doped LuAG or YAG crystals but the best proportionality has YAP:Ce crystal. Pr3+- or Ce3+-doped LuAG crystals exhibit slow decay components in the time range 1.5–3.5 μs while those of YAG ones have shorter decay components between 0.3–1.7 μs. |
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