TY - JOUR
T1 - Floating zone growth and scintillation properties of undoped and Ce-doped GdTaO4 crystals
AU - Nakauchi, D.
AU - Koshimizu, M.
AU - Okada, G.
AU - Yanagida, T.
N1 - Funding Information:
This work was supported by a Grant in Aid for Scientific Research (A)-26249147 from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese government (MEXT) and partially by JST A-step. The Cooperative Research Project of Research Institute of Electronics, Shizuoka University, KRF foundation, Hitachi Metals Materials Science foundation, and Inamori foundation are also acknowledged.
Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017/11
Y1 - 2017/11
N2 - Undoped and Ce-doped GdTaO4 single crystals with different Ce concentration were grown by the floating zone method. By X-ray diffraction analysis, we confirmed all the grown crystals do not have any impurity phases. In X-ray induced scintillation spectra, the undoped sample shows a broad emission band around 300–700 nm, and the decay time of this emission is around 500 ns In Ce-doped samples, emissions are observed around 400–700 nm, and the decay time constants are around 50 ns which is a typical value of the 5d-4f transitions of Ce3+. In order to reveal the detailed scintillating behaviors, we measured the temperature dependence of X-ray induced scintillation spectra and revealed the energy transfer mechanisms between two different excited states of luminescent centers.
AB - Undoped and Ce-doped GdTaO4 single crystals with different Ce concentration were grown by the floating zone method. By X-ray diffraction analysis, we confirmed all the grown crystals do not have any impurity phases. In X-ray induced scintillation spectra, the undoped sample shows a broad emission band around 300–700 nm, and the decay time of this emission is around 500 ns In Ce-doped samples, emissions are observed around 400–700 nm, and the decay time constants are around 50 ns which is a typical value of the 5d-4f transitions of Ce3+. In order to reveal the detailed scintillating behaviors, we measured the temperature dependence of X-ray induced scintillation spectra and revealed the energy transfer mechanisms between two different excited states of luminescent centers.
KW - Floating zone method
KW - GdTaO4
KW - Scintillation
KW - Single crystal
KW - Thermally stimulated luminescence
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U2 - 10.1016/j.radmeas.2017.03.033
DO - 10.1016/j.radmeas.2017.03.033
M3 - Article
AN - SCOPUS:85016573756
VL - 106
SP - 129
EP - 133
JO - Radiation Measurements
JF - Radiation Measurements
SN - 1350-4487
ER -