| Title |
Compositional engineering of multicomponent garnet scintillators: towards an ultra-accelerated scintillation response |
| Authors |
Martinazzoli, Loris ; Nargelas, Saulius ; Bohacek, Pavel ; Cala, Roberto ; Dusek, Michal ; Rohlicek, Jan ; Tamulaitis, Gintautas ; Auffray, Etiennette ; Nikl, Martin |
| DOI |
10.1039/D2MA00626J |
| Full Text |
|
| Is Part of |
Materials advances.. Cambridge : The Royal Society of Chemistry. 2022, vol. 3, iss. 17, p. 6842-6852.. eISSN 2633-5409 |
| Keywords [eng] |
Optical characteristics ; luminescence ; scintillation ; GAGG |
| Abstract [eng] |
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. |
| Published |
Cambridge : The Royal Society of Chemistry |
| Type |
Journal article |
| Language |
English |
| Publication date |
2022 |
| CC license |
|
