Scintillator-oriented combinatorial search in Ce-doped (Y,Gd)3(Ga,Al)5O12 multicomponent garnet compounds

K Kamada; T Yanagida; J Pejchal; M Nikl; T Endo; K Tsutumi; Y Fujimoto; A Fukabori; A Yoshikawa

doi:10.1088/0022-3727/44/50/505104

journal article Dec 02, 2011

Scintillator-oriented combinatorial search in Ce-doped (Y,Gd)3(Ga,Al)5O12 multicomponent garnet compounds

K Kamada T Yanagida J Pejchal M Nikl T Endo K Tsutumi Y Fujimoto A Fukabori A Yoshikawa

Journal of Physics D: Applied Physics Vol. 44 No. 50 pp. 505104 · IOP Publishing

View at Publisher Save 10.1088/0022-3727/44/50/505104

Abstract

Abstract
Ce-doped (Y
y
Gd1−y
)3(Ga
x
Al1−x
)5O12(x = 0, 1, 2, 3, 4 and y = 1, 2, 3) single crystals are grown by the micro-pulling down method. X-ray diffraction and electron probe microanalysis techniques are employed to check their structure and chemical composition, respectively. Optical and photoluminescence characteristics are measured and radioluminescence spectra, light yield and scintillation decay measurements are further made to evaluate the scintillation performance. We show that balanced Gd and Ga admixture in the Y3Al5O12 structure can considerably increase the scintillation efficiency, and the spectrally corrected light yield value exceeds 44 000 photon MeV−1. Scintillation decay times approach that of Ce3+ photoluminescence decay and an additional less intense slower component is also observed. Physical aspects of energy transfer process and 5d1 excited state depopulation are discussed. The micro-pulling down technique is shown as an ideal tool for a directed combinatorial search for targeted single crystal compositions to reveal those with the highest figure-of-merit for a given application field.

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Metrics

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References

Details

Published: Dec 02, 2011
Vol/Issue: 44(50)
Pages: 505104
License: View

Authors

Cite This Article

K Kamada, T Yanagida, J Pejchal, et al. (2011). Scintillator-oriented combinatorial search in Ce-doped (Y,Gd)3(Ga,Al)5O12 multicomponent garnet compounds. Journal of Physics D: Applied Physics, 44(50), 505104. https://doi.org/10.1088/0022-3727/44/50/505104

Scintillator-oriented combinatorial search in Ce-doped (Y,Gd)3(Ga,Al)5O12 multicomponent garnet compounds

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