Optical characterization of scintillating phosphate and silicates glasses is presented including absorption, emission spectra and decay kinetics. A new concept of energy transfer sensitization is developed, based on nearly resonant energy migration through a rare earth ion subsystem (Gd3+ ions at sufficiently high concentration) in the glass matrix, followed by a single-step transfer towards the emission centers created by Ce3+ or Tb3+ doping. While Ce3+ doping in phosphates results in emission spectra in the near UV-violet, the Tb3+ doping in silicates gives a four-band spectrum with a dominating one at 545 nm. Intense UV irradiation produces a reduction of emission intensity in phosphate glasses.

Baccaro, S., Dall'Igna, R., Fabeni, P., Martini, M., Mares, J., Meinardi, F., et al. (2000). Ce3+ or Tb3+-doped phosphate and silicate scintillating glasses. JOURNAL OF LUMINESCENCE, 87-89, 673-675 [10.1016/S0022-2313(99)00353-1].

Ce3+ or Tb3+-doped phosphate and silicate scintillating glasses

MARTINI, MARCO;MEINARDI, FRANCESCO;VEDDA, ANNA GRAZIELLA;
2000

Abstract

Optical characterization of scintillating phosphate and silicates glasses is presented including absorption, emission spectra and decay kinetics. A new concept of energy transfer sensitization is developed, based on nearly resonant energy migration through a rare earth ion subsystem (Gd3+ ions at sufficiently high concentration) in the glass matrix, followed by a single-step transfer towards the emission centers created by Ce3+ or Tb3+ doping. While Ce3+ doping in phosphates results in emission spectra in the near UV-violet, the Tb3+ doping in silicates gives a four-band spectrum with a dominating one at 545 nm. Intense UV irradiation produces a reduction of emission intensity in phosphate glasses.
Articolo in rivista - Articolo scientifico
scintillating glasses
English
2000
87-89
673
675
none
Baccaro, S., Dall'Igna, R., Fabeni, P., Martini, M., Mares, J., Meinardi, F., et al. (2000). Ce3+ or Tb3+-doped phosphate and silicate scintillating glasses. JOURNAL OF LUMINESCENCE, 87-89, 673-675 [10.1016/S0022-2313(99)00353-1].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/31662
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