Photo‐ and radioluminescence of Pr‐doped Lu₃Al₅O₁₂ single crystal

Abstract

Photo‐ and radioluminescence characteristics of the Pr3+‐doped Lu3Al5O12 single crystal are reported and compared with those of Pr‐doped Y3Al5O12. With respect to the Y3Al5O12 host, lower emission quenching and better temperature stability round 300 K is obtained for the Pr3+ 5d–4f emission peaking round 308 nm and about a factor 2 higher radioluminescence intensity is observed around this temperature. The photoluminescence decay time is of about 17 ns, while the scintillation decay is dominated by the component of about 25 ns. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

33000 photons per MeV from mixed (Lu_075Y_025)_3Al_5O_12:Pr scintillator crystals

“…Praseodymium activated lutetium aluminum garnet, Lu 3 Al 5 O 12 :Pr (LuAG:Pr), one of the most notable materials introduced to the market in the 21th century, was first pointed out as a promising heavy and fast scintillator in 2005 by Nikl et al [1]. With a density of 6.7 g/cm 3 , an exquisite energy resolution of 4.6% (at 662 keV), and a fast decay constant of 20 ns, it quickly attracted a lot of attention and was considered and/or implemented into diverse applications, mostly in the field of medical diagnostics [2,3].…”

Effect of thermal annealing in air on scintillation properties of LuAG and LuAG:Pr

“…Lu 3 Al 5 O 12 :Pr has a potential as a modern scintillator characterized by excellent energy resolution of 4.6% (at 662 keV), high density of 6.7 g/cm 3 , fast response of 20 ns, and low scintillation non-proportionality of around 8% in * E-mail: brykam@fizyka.umk.pl the range from 17 to 1274 keV [1][2][3][4]. Although the light yield of around 19000 ph/MeV is not the best parameter of this material, one observes an increase of about 30% of the value just by heating the sample to ∼180°C.…”

Bi3+–Ce3+ energy transfer and luminescent properties of LuAG:Bi,Ce and YAG:Bi,Ce single crystalline films

“…The Ce 3+ doped Y 3 Al 5 O 12 (YAG) and Lu 3 Al 5 O 12 (LuAG) garnets posses an intense and fast emission in the visible (515-530 nm) range due to 5d-4f radiative transition of Ce 3+ ions and have been considered now for different scintillator applications [1][2][3][4]. The Ce-doped YAG and LuAG-based scintillators can be prepared both in the form of bulk single crystals (SC) by the Czochralski or Bridgman methods [1][2][3][4] as well as in the form of single crystalline films (SCF) by the Liquid Phase Epitaxy (LPE) method with the typical thickness of 2-60 m [5][6][7].…”

“…The Ce-doped YAG and LuAG-based scintillators can be prepared both in the form of bulk single crystals (SC) by the Czochralski or Bridgman methods [1][2][3][4] as well as in the form of single crystalline films (SCF) by the Liquid Phase Epitaxy (LPE) method with the typical thickness of 2-60 m [5][6][7]. Apart the traditional scintillation applications for environmental radiation monitoring [7] they can be employed also for imaging screens with high spatial resolution [8][9][10] with some advantages with respect to typical powder phosphorbased screens [11][12][13].…”