@article{Zhu2023, 
author = {Danyang Zhu and Lexiang Wu and Alena Beitlerova and Romana Kucerkova and Weerapong Chewpraditkul and Martin Nikl and Jiang Li},
title = {Compositional regulation of multi-component GYGAG:Ce scintillation ceramics: Self-sintering-aid effect and afterglow suppression},
year = {2023},
journal = {Journal of Advanced Ceramics},
volume = {12},
number = {10},
pages = {1919-1929},
keywords = {GYGAG:Ce ceramics, multi-component garnet, compositional regulation, afterglow},
url = {https://www.sciopen.com/article/10.26599/JAC.2023.9220797},
doi = {10.26599/JAC.2023.9220797},
abstract = {(Gd,Y,Ce)3(YxGa1−x)2GaAl2O12 (GYGAG:Ce) scintillation ceramics with different Y excess, where x = 0.005−0.08, were fabricated by the solid-state reaction method. The effects of stoichiometry on the phase composition, optical quality, and microstructure of GYGAG:Ce ceramics were analyzed. GYGAG:Ce ceramics have a pure garnet phase and obtain good in-line transmittance when x < 0.04, while more Y excess leads to the creation of the secondary phase. The change of x value influences the sintering behavior of the GYGAG:Ce ceramics: The excess of Y works as the self-sintering aid and significantly reduces the sintering temperature of ceramics. When x = 0.01–0.04, the X-ray excited luminescence (XEL) spectra and light yields of GYGAG:Ce ceramics are similar. The fast scintillation decay time and afterglow intensity of GYGAG:Ce ceramics show a slight decrease with increasing x value. Finally, additional 50–500 ppm MgO and 100–500 ppm CaO were introduced to the GYGAG:Ce ceramic with x = 0.04, and both were found to significantly increase the fast scintillation component and reduce the afterglow intensity by two orders of magnitude to 0.01% after X-ray cut-off.}
}