Thermally stimulated luminescence (TSL) glow curves and emission spectra were studied in undoped and Ce-doped Lu3 Al5 O12 single crystals by wavelength resolved TSL measurements in the 10-310 K temperature range. Isothermal phosphorescence measurements in the 10-100 K range were also performed, which point to the existence of a tunneling-driven radiative recombination process. These processes can explain the presence and time-dependence of the submicrosecond slow decay component in the scintillation decay. Electron paramagnetic resonance experiments suggest the presence of LuAl defects in the vicinity of Ce3+ ions, which are the most probable electron and hole traps participating in the tunneling-driven radiative recombination process. © 2007 The American Physical Society.

Nikl, M., Vedda, A., Fasoli, M., Fontana, I., Laguta, V., Mihokova, E., et al. (2007). Shallow traps and radiative recombination processes in Lu3Al5O12:Ce single crystal scintillator. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 76(19), 195121 [10.1103/PhysRevB.76.195121].

Shallow traps and radiative recombination processes in Lu3Al5O12:Ce single crystal scintillator

VEDDA, ANNA GRAZIELLA;FASOLI, MAURO;
2007

Abstract

Thermally stimulated luminescence (TSL) glow curves and emission spectra were studied in undoped and Ce-doped Lu3 Al5 O12 single crystals by wavelength resolved TSL measurements in the 10-310 K temperature range. Isothermal phosphorescence measurements in the 10-100 K range were also performed, which point to the existence of a tunneling-driven radiative recombination process. These processes can explain the presence and time-dependence of the submicrosecond slow decay component in the scintillation decay. Electron paramagnetic resonance experiments suggest the presence of LuAl defects in the vicinity of Ce3+ ions, which are the most probable electron and hole traps participating in the tunneling-driven radiative recombination process. © 2007 The American Physical Society.
Articolo in rivista - Articolo scientifico
defects,scintillators,traps, rare earths
English
2007
76
19
195121
195121
none
Nikl, M., Vedda, A., Fasoli, M., Fontana, I., Laguta, V., Mihokova, E., et al. (2007). Shallow traps and radiative recombination processes in Lu3Al5O12:Ce single crystal scintillator. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 76(19), 195121 [10.1103/PhysRevB.76.195121].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/13669
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