TY - JOUR
T1 - Characterization of scintillation properties in Ca(Nb,Ta)2O6 single crystals
AU - Hayashi, Taisei
AU - Ichiba, Kensei
AU - Nakauchi, Daisuke
AU - Watanabe, Kenichi
AU - Kato, Takumi
AU - Kawaguchi, Noriaki
AU - Yanagida, Takayuki
N1 - Publisher Copyright:
© 2024 Elsevier Ltd
PY - 2024/6
Y1 - 2024/6
N2 - CaNb2-xTaxO6 (x = 0, 0.2, 0.5 and 1) single crystals were fabricated by the floating zone method, and their photoluminescence (PL) and scintillation properties were evaluated. Under excitation at 280 nm, CaNb2-xTaxO6 single crystal showed a broad emission band at 400–600 nm. From the decay time constant, the observed emission was attributed to the charge transfer (CT) from the Nb5+ to the O2−. Under X-ray irradiation, an emission peak was observed at 470 nm, and the scintillation decay time profile suggested that the origin of the emission was also CT from the Nb5+ to the O2−. CaNb2O6 showed the highest light yield of 15,000 ph/MeV and the lowest afterglow level of 6.03 ppm among the synthesized samples.
AB - CaNb2-xTaxO6 (x = 0, 0.2, 0.5 and 1) single crystals were fabricated by the floating zone method, and their photoluminescence (PL) and scintillation properties were evaluated. Under excitation at 280 nm, CaNb2-xTaxO6 single crystal showed a broad emission band at 400–600 nm. From the decay time constant, the observed emission was attributed to the charge transfer (CT) from the Nb5+ to the O2−. Under X-ray irradiation, an emission peak was observed at 470 nm, and the scintillation decay time profile suggested that the origin of the emission was also CT from the Nb5+ to the O2−. CaNb2O6 showed the highest light yield of 15,000 ph/MeV and the lowest afterglow level of 6.03 ppm among the synthesized samples.
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U2 - 10.1016/j.radphyschem.2024.111624
DO - 10.1016/j.radphyschem.2024.111624
M3 - Article
AN - SCOPUS:85186960158
SN - 0969-806X
VL - 219
JO - Radiation Physics and Chemistry
JF - Radiation Physics and Chemistry
M1 - 111624
ER -