TY - JOUR
T1 - Optical and scintillation properties of LuGd2Al2Ga3O12:Ce, Lu2GdAl2Ga3O12:Ce, and Lu2YAl2Ga3O12:Ce single crystals
T2 - A comparative study
AU - Chewpraditkul, Warut
AU - Pattanaboonmee, Nakarin
AU - Chewpraditkul, Weeeapong
AU - Szczesniak, Tomasz
AU - Moszynski, Marek
AU - Kamada, Kei
AU - Yoshikawa, Akira
AU - Kucerkova, Romana
AU - Nikl, Martin
N1 - Funding Information:
This work is supported by the King Mongkut’s University of Technology Thonburi, Thailand under Post-doctoral Research Project 2021 (Warut Chewpraditkul). Partial supports by the Institute for Materials Research (IMRT) , Tohoku University Japan and by the Czech Ministry of Education, Youth and Sports under Project SOLID21 CZ.02.1. 01/0.0/0.0/16_019/0000760 are gratefully acknowledged.
Publisher Copyright:
© 2021
PY - 2021/7/11
Y1 - 2021/7/11
N2 - Optical and scintillation properties of LuGd2Al2Ga3O12:Ce, Lu2GdAl2Ga3O12:Ce, and Lu2YAl2Ga3O12:Ce single crystals are compared. The blue-shift of 5d1→ 4f photoluminescence emission (PL) band is observed upon partial substitution of Gd3+ with a smaller Lu3+ (or Y3+) ion. At 662 keV γ-rays, the light yield of 35,400 ± 1,700 ph/MeV obtained for LuGd2Al2Ga3O12:Ce is higher than that of 29,200 ± 1,500 ph/MeV and 20,200 ± 1,000 ph/MeV for Lu2GdAl2Ga3O12:Ce and Lu2YAl2Ga3O12:Ce, respectively. Scintillation decays are approximated by sum of exponentials with the fast component decay time and relative intensity of 78 ns (42%) for LuGd2Al2Ga3O12:Ce, 48 ns (71%) for Lu2GdAl2Ga3O12:Ce and 45 ns (88%) for Lu2YAl2Ga3O12:Ce, which leads to a superior coincidence time resolution of Lu2YAl2Ga3O12:Ce. PL decay time at 110 K and 290 K, afterglow characteristics, and mass attenuation coefficient at 59.5 keV and 662 keV γ - rays are also presented.
AB - Optical and scintillation properties of LuGd2Al2Ga3O12:Ce, Lu2GdAl2Ga3O12:Ce, and Lu2YAl2Ga3O12:Ce single crystals are compared. The blue-shift of 5d1→ 4f photoluminescence emission (PL) band is observed upon partial substitution of Gd3+ with a smaller Lu3+ (or Y3+) ion. At 662 keV γ-rays, the light yield of 35,400 ± 1,700 ph/MeV obtained for LuGd2Al2Ga3O12:Ce is higher than that of 29,200 ± 1,500 ph/MeV and 20,200 ± 1,000 ph/MeV for Lu2GdAl2Ga3O12:Ce and Lu2YAl2Ga3O12:Ce, respectively. Scintillation decays are approximated by sum of exponentials with the fast component decay time and relative intensity of 78 ns (42%) for LuGd2Al2Ga3O12:Ce, 48 ns (71%) for Lu2GdAl2Ga3O12:Ce and 45 ns (88%) for Lu2YAl2Ga3O12:Ce, which leads to a superior coincidence time resolution of Lu2YAl2Ga3O12:Ce. PL decay time at 110 K and 290 K, afterglow characteristics, and mass attenuation coefficient at 59.5 keV and 662 keV γ - rays are also presented.
KW - (Gd,Lu,Y)AlGaO:Ce
KW - Coincidence time resolution
KW - Light yield
KW - Mass attenuation coefficient
KW - Photoluminescence decay
KW - Scintillation decay
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U2 - 10.1016/j.nima.2021.165381
DO - 10.1016/j.nima.2021.165381
M3 - Article
AN - SCOPUS:85107149076
SN - 0168-9002
VL - 1004
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
M1 - 165381
ER -