TY - JOUR
T1 - Scintillation properties of Gd3Al2Ga3O12:Ce, Li and Gd3Al2Ga3O12:Ce, Mg single crystal scintillators
T2 - A comparative study
AU - Chewpraditkul, Warut
AU - Pattanaboonmee, Nakarin
AU - Sakthong, Ongsa
AU - Wantong, Kriangkrai
AU - Chewpraditkul, Weerapong
AU - Yoshikawa, Akira
AU - Kamada, Kei
AU - Kurosawa, Shunsuke
AU - Szczesniak, Tomasz
AU - Moszynski, Marek
AU - Babin, Vladimir
AU - Nikl, Martin
N1 - Funding Information:
The authors acknowledge the financial support provided by King Mongkut's University of Technology Thonburi through the “ KMUTT 55th Anniversary Commemorative Fund”. Warut Chewpraditkul acknowledges the Petchra Prajomklao Doctor's Degree Research Scholarship from KMUTT. This work is partially supported by the National Research Council of Thailand ( NRCT project no. 2561A30602099 ). The work is partially supported by Operational Programme Research, Development and Education financed by European Structural and Investment Funds and the Czech Ministry of Education, Youth and Sports (Project No. SOLID21 CZ.02.1.01/0.0/0.0/16_019/0000760 ).
Publisher Copyright:
© 2019
PY - 2019/6
Y1 - 2019/6
N2 - The scintillation characteristics of Gd3Al2Ga3O12:Ce, Li (GAGG:Ce,Li) and Gd3Al2Ga3O12:Ce, Mg (GAGG:Ce,Mg) single crystals were compared. Radioluminescence spectra and photoluminescence decay curves were measured at various temperatures between 77 and 500 K to investigate the thermal luminescence quenching. At 662 keV γ rays, the LY value of 35,400 photons/MeV and energy resolution of 6.9% obtained for GAGG:Ce, Li are superior to those of 24,200 photons/MeV and 9.5% for GAGG:Ce,Mg. Scintillation decays are approximated by a double exponentials with a fast principal decay component of 47 ns (83%) for GAGG:Ce, Mg and 90 ns (86%) for GAGG:Ce,Li. Coincidence time resolution of 282 ps obtained for GAGG:Ce, Mg is better than that of 389 ps for GAGG:Ce,Li. GAGG:Ce, Mg shows a much lower afterglow and thermally stimulated luminescence intensity with respect to GAGG:Ce,Li.
AB - The scintillation characteristics of Gd3Al2Ga3O12:Ce, Li (GAGG:Ce,Li) and Gd3Al2Ga3O12:Ce, Mg (GAGG:Ce,Mg) single crystals were compared. Radioluminescence spectra and photoluminescence decay curves were measured at various temperatures between 77 and 500 K to investigate the thermal luminescence quenching. At 662 keV γ rays, the LY value of 35,400 photons/MeV and energy resolution of 6.9% obtained for GAGG:Ce, Li are superior to those of 24,200 photons/MeV and 9.5% for GAGG:Ce,Mg. Scintillation decays are approximated by a double exponentials with a fast principal decay component of 47 ns (83%) for GAGG:Ce, Mg and 90 ns (86%) for GAGG:Ce,Li. Coincidence time resolution of 282 ps obtained for GAGG:Ce, Mg is better than that of 389 ps for GAGG:Ce,Li. GAGG:Ce, Mg shows a much lower afterglow and thermally stimulated luminescence intensity with respect to GAGG:Ce,Li.
KW - Light yield
KW - Luminescence
KW - Multicomponent garnets
KW - Scintillators
KW - Time resolution
UR - http://www.scopus.com/inward/record.url?scp=85064393342&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85064393342&partnerID=8YFLogxK
U2 - 10.1016/j.optmat.2019.04.023
DO - 10.1016/j.optmat.2019.04.023
M3 - Article
AN - SCOPUS:85064393342
SN - 0925-3467
VL - 92
SP - 181
EP - 186
JO - Optical Materials
JF - Optical Materials
ER -