Effect of the Pr3+ → Gd3+ energy transfer in multicomponent garnet single crystal scintillators

被引：18
作者：
Babin, V. [1 ]
Nikl, M. [1 ]
Kamada, K. [2 ]
Beitlerova, A. [1 ]
Yoshikawa, A. [2 ,3 ]
机构：
[1] Inst Phys AS CR, Prague 16253, Czech Republic
[2] Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan
[3] Tohoku Univ, IMR, Sendai, Miyagi 9808577, Japan
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2013年 / 46卷 / 36期
关键词：
DELAYED RECOMBINATION; LUMINESCENCE; GROWTH; CE3+; LUAG;
D O I：
10.1088/0022-3727/46/36/365303
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Luminescence processes in the undoped and Pr3+-doped (Gd,RE)(3)(Ga,Al)(5)O-12, RE = Lu,Y, multicomponent garnets are studied by time-resolved photoluminescence spectroscopy. Energy transfer processes between Pr3+ and Gd3+ causing significant deterioration of the scintillation performance are considered in detail. As is shown in current work, an overlap of the 5d(1)-H-3(4) emission transition of Pr3+ and S-8-P-6(x) absorption transition of Gd3+ results in unwanted depletion of Pr3+ 5d(1) excited state and is further intensified by the concentration quenching in the Gd3+-sublattice. This process explains a drastic decrease of light yield in Pr3+-doped Gd3+-containing multicomponent garnets observed in a previous work.
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页数：6
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