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Crystal Growth and Scintillation Properties of 2-Inch-Diameter ${\rm Pr}:{\rm Lu}_{3}{\rm Al}_{5} {\rm O} _{12}$ (Pr:LuAG) Single Crystal

Kei KamadaMaterials Research Laboratory, Furukawa Company Limited, Tsukuba, Ibaraki, JapanKousuke TsutsumiMaterials Research Laboratory, Furukawa Company Limited, Tsukuba, Ibaraki, JapanY. UsukiMaterials Research Laboratory, Furukawa Company Limited, Tsukuba, Ibaraki, JapanHiraku OginoSchool of Engineering, University of Tokyo, Tokyo, JapanTakayuki YanagidaAkira Yoshikawa

2008en

ABI

Annotatsiya

In this work we tried to grow 2-inch-diameter and high quality Pr:LuAG single crystals by the Czochralski (Cz) method. To grow the large diameter Pr:LuAG single crystal, we have optimized growth conditions and the furnace design. As a result, we have succeeded in the growth of 2-inch-diameter Pr:LuAG single crystal with a length of 110 mm. To determine light yield and energy resolution the energy spectra were collected under 662 keV gamma-ray excitation ( <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">137</sup> Cs source) and detection by a photomultiplier (Hamamatsu H7826). The light yield was around three times higher than that of BGO and almost homogeneous with increasing solidification fraction up to 0.32. The energy resolution was around 8%. Furthermore, scintillation decay time was around 23 ns and almost homogeneous all over the crystal.

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Identifikatorlar

DOI: 10.1109/tns.2008.924072

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