TY - JOUR
T1 - Luminescence and light yield of (Gd2Y)(Ga3Al2)O12:Pr3+ single crystal scintillators
AU - Lertloypanyachai, Prapon
AU - Pathumrangsan, Nichakorn
AU - Sreebunpeng, Krittiya
AU - Pattanaboonmee, Nakarin
AU - Chewpraditkul, Weerapong
AU - Yoshikawa, Akira
AU - Kamada, Kei
AU - Nikl, Martin
N1 - Funding Information:
This work is partially supported by the National Research Council of Thailand (NRCT Project no. 59225529). Financial support of Czech science foundation (No. 16-15569S project) is also gratefully acknowledged. Partial supported from the New Energy and Industrial Technology Development Organization (NEDO), Japan is also greatly appreciated.
PY - 2017/6/15
Y1 - 2017/6/15
N2 - Praseodymium-doped (Gd2Y)(Ga3Al2)O12 (GYGAG: Pr) single crystals are grown by the micro-pulling down method with different Pr concentrations. The energy transfer process between Pr3+ and Gd3+ is investigated by photoluminescence excitation (PLE) and emission (PL) spectra measurements. Photoelectron yield measurements are carried out using photomultiplier. At 662 keV γ-rays, photoelectron yield of 2520 phe/MeV obtained for the GYGAG: Pr (0.01%) sample is larger than that of 1810 phe/MeV obtained for BGO crystal. Light yield degradation for the GYGAG: Pr scintillators is presumably due to the energy transfer from 5d state of Pr3+ to 4f state of Gd3+ together with the concentration quenching in the Gd3+-sublattice.
AB - Praseodymium-doped (Gd2Y)(Ga3Al2)O12 (GYGAG: Pr) single crystals are grown by the micro-pulling down method with different Pr concentrations. The energy transfer process between Pr3+ and Gd3+ is investigated by photoluminescence excitation (PLE) and emission (PL) spectra measurements. Photoelectron yield measurements are carried out using photomultiplier. At 662 keV γ-rays, photoelectron yield of 2520 phe/MeV obtained for the GYGAG: Pr (0.01%) sample is larger than that of 1810 phe/MeV obtained for BGO crystal. Light yield degradation for the GYGAG: Pr scintillators is presumably due to the energy transfer from 5d state of Pr3+ to 4f state of Gd3+ together with the concentration quenching in the Gd3+-sublattice.
KW - A1.Luminescence
KW - A1.Photoelectron yield
KW - A1.Scintillation
KW - B1.(GdY)(GaAl)O:Pr
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U2 - 10.1016/j.jcrysgro.2016.10.018
DO - 10.1016/j.jcrysgro.2016.10.018
M3 - Article
AN - SCOPUS:85008657289
VL - 468
SP - 369
EP - 372
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
SN - 0022-0248
ER -