Abstract
We study the luminescence decay times of Ce3+: Lu2SiO5 scintillator, co-doped with Sc3+ and Li+ ions, under the direct photoexcitation of Ce3+ ions at 337 nm and excitation by a pulsed electron beam with energies of 100 – 300 keV. The cathodoluminescence (CL) and photoluminescence (PL) decay times of studied sample are equal within the experimental error. Two emission bands are found: in the range of 370 – 480 nm (“high-energy band”) and 500 – 570 nm (“low-energy band”). The highenergy emission band has the decay times ∼40 ns. The low-energy emission band has the maximum decay time ∼60 ns at 545 nm. The observed results show that the transport stage of Li:Sc:Ce:Lu2SiO5 scintillation mechanism is not affected by a high negative space charge and high density of electronic excitations provided by the high-power electron beam.
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Belov, M.V., Kozlov, V.A., Kutovoi, S.A. et al. Wavelength-Resolved Photoluminescence and Cathodoluminescence Decay Times of LSO:Ce Scintillator CO-Doped with Lithium and Scandium. J Russ Laser Res 42, 313–317 (2021). https://doi.org/10.1007/s10946-021-09964-3
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DOI: https://doi.org/10.1007/s10946-021-09964-3