Effect of the Pr.sup.3+./sup.→Gd.sup.3+./sup. energy transfer in multicomponent garnet single crystal scintillators

0396626 - FZÚ 2014 RIV GB eng J - Článek v odborném periodiku
Babin, Vladimir - Nikl, Martin - Kamada, K. - Beitlerová, Alena - Yoshikawa, A.
Effect of the Pr³⁺→Gd³⁺ energy transfer in multicomponent garnet single crystal scintillators.
Journal of Physics D-Applied Physics. Roč. 46, č. 36 (2013), s. 1-6. ISSN 0022-3727. E-ISSN 1361-6463
Grant CEP: GA MŠMT LH12150
Institucionální podpora: RVO:68378271
Klíčová slova: scintillator * Pr³⁺ * garnet * energy transfer * decay kinetics
Kód oboru RIV: BH - Optika, masery a lasery
Impakt faktor: 2.521, rok: 2013
http://stacks.iop.org/JPhysD/46/365303

Luminescence processes in the undoped and Pr3+-doped (Gd,RE)3(Ga,Al)5O12, RE=Lu,Y, multicomponent garnets are studied by the time-resolved photoluminescence spectroscopy. Energy transfer processes between Pr3+ and Gd3+ causing significant deterioration of the scintillation performance are considered in detail. As it is shown in current work, an overlap of the 5d1-3H4 emission transition of Pr3+ and 8S-6Px absorption transition of Gd3+ results in unwanted depletion of Pr3+ 5d1 excited state and is further intensified by the concentration quenching in the Gd3+-sublattice. This process explains a drastic decrease of light yield in Pr3+-doped Gd3+-containing multicomponent garnets observed in a previous work.
Trvalý link: http://hdl.handle.net/11104/0224359