Issue 17, 2022

Compositional engineering of multicomponent garnet scintillators: towards an ultra-accelerated scintillation response

Abstract

Optical, luminescence and scintillation characteristics were studied in garnet-type GAGG single-crystal scintillators grown by the Czochralski method and heavily doped with a cerium activator and a magnesium codopant at different concentrations. Emission quenching due to the formation of closely spaced Ce–Mg pairs accelerating the photoluminescence and scintillation decays down to a few nanoseconds and substantial suppression of slower decay components are observed. We show that despite a significant decrease in the scintillation yield, the coincidence time resolution and the afterglow, which are the most critically important parameters of fast scintillators, exhibited by the heavily doped GAGG:Ce,Mg are superior to those in the state-of-the-art scintillators. Due to the peculiar feature of the GAGG host to tolerate extremely high cerium and magnesium concentrations while still maintaining a bulk single crystal form, this scintillator has a great potential for high-count-rate applications in high energy physics experiments and industries with harsh operational environments, where a lower light yield can be tolerated.

Graphical abstract: Compositional engineering of multicomponent garnet scintillators: towards an ultra-accelerated scintillation response

Supplementary files

Article information

Article type
Paper
Submitted
01 Jan 2022
Accepted
11 Upu 2022
First published
12 Upu 2022
This article is Open Access
Creative Commons BY-NC license

Mater. Adv., 2022,3, 6842-6852

Compositional engineering of multicomponent garnet scintillators: towards an ultra-accelerated scintillation response

L. Martinazzoli, S. Nargelas, P. Boháček, R. Calá, M. Dušek, J. Rohlíček, G. Tamulaitis, E. Auffray and M. Nikl, Mater. Adv., 2022, 3, 6842 DOI: 10.1039/D2MA00626J

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