Effect of the Pr3+ → Gd3+ energy transfer in multicomponent garnet single crystal scintillators

V. Babin; M. Nikl; K. Kamada; A. Beitlerova; A. Yoshikawa

doi:10.1088/0022-3727/46/36/365303

Effect of the Pr³⁺ → Gd³⁺ energy transfer in multicomponent garnet single crystal scintillators

V. Babin, M. Nikl, K. Kamada, A. Beitlerova, A. Yoshikawa

Czech Academy of Sciences

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Luminescence processes in the undoped and Pr³⁺-doped (Gd,RE)₃(Ga,Al)₅O₁₂, RE = Lu,Y, multicomponent garnets are studied by time-resolved photoluminescence spectroscopy. Energy transfer processes between Pr³⁺ and Gd³⁺ causing significant deterioration of the scintillation performance are considered in detail. As is shown in current work, an overlap of the 5d_1- ³H₄ emission transition of Pr³⁺ and ⁸S-⁶P_x absorption transition of Gd³⁺ results in unwanted depletion of Pr³⁺ 5d₁ excited state and is further intensified by the concentration quenching in the Gd ³⁺-sublattice. This process explains a drastic decrease of light yield in Pr³⁺-doped Gd³⁺-containing multicomponent garnets observed in a previous work.

Original language	English
Article number	365303
Journal	Journal Physics D: Applied Physics
Volume	46
Issue number	36
DOIs	https://doi.org/10.1088/0022-3727/46/36/365303
Publication status	Published - 2013 Sept 11

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title = "Effect of the Pr3+ → Gd3+ energy transfer in multicomponent garnet single crystal scintillators",

abstract = "Luminescence processes in the undoped and Pr3+-doped (Gd,RE)3(Ga,Al)5O12, RE = Lu,Y, multicomponent garnets are studied by time-resolved photoluminescence spectroscopy. Energy transfer processes between Pr3+ and Gd3+ causing significant deterioration of the scintillation performance are considered in detail. As 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 Gd 3+-sublattice. This process explains a drastic decrease of light yield in Pr3+-doped Gd3+-containing multicomponent garnets observed in a previous work.",

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AU - Babin, V.

AU - Nikl, M.

AU - Kamada, K.

AU - Beitlerova, A.

AU - Yoshikawa, A.

PY - 2013/9/11

Y1 - 2013/9/11

N2 - Luminescence processes in the undoped and Pr3+-doped (Gd,RE)3(Ga,Al)5O12, RE = Lu,Y, multicomponent garnets are studied by time-resolved photoluminescence spectroscopy. Energy transfer processes between Pr3+ and Gd3+ causing significant deterioration of the scintillation performance are considered in detail. As 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 Gd 3+-sublattice. This process explains a drastic decrease of light yield in Pr3+-doped Gd3+-containing multicomponent garnets observed in a previous work.

AB - Luminescence processes in the undoped and Pr3+-doped (Gd,RE)3(Ga,Al)5O12, RE = Lu,Y, multicomponent garnets are studied by time-resolved photoluminescence spectroscopy. Energy transfer processes between Pr3+ and Gd3+ causing significant deterioration of the scintillation performance are considered in detail. As 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 Gd 3+-sublattice. This process explains a drastic decrease of light yield in Pr3+-doped Gd3+-containing multicomponent garnets observed in a previous work.

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Effect of the Pr³⁺ → Gd³⁺ energy transfer in multicomponent garnet single crystal scintillators

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