TY - JOUR
T1 - Optical and scintillation properties of Ca 3NbGa 3Si 2O 14 single crystal grown by micro-pulling down method
AU - Futami, Yoshisuke
AU - Yokota, Yuui
AU - Sato, Masato
AU - Yanagida, Takayuki
AU - Kawaguchi, Noriaki
AU - Fujimoto, Yutaka
AU - Tota, Kazushige
AU - Onodera, Ko
AU - Yoshikawa, Akira
PY - 2012/8/1
Y1 - 2012/8/1
N2 - The Ca 3NbGa 3Si 2O 14 (CNGS) crystal was grown by the micro-pulling down (μPD) method and the annealing effect on physical properties of CNGS crystal was investigated in this study. And the effects of oxygen content on the physical properties were systematically studied. Additionally, Photoluminescence (PL)-Mapping and radioluminescence spectra of CNGS were observed. The absorption peaks were observed around 350 and 500 nm. This absorption at 500 nm was very sensitive to a quantity of excess oxygen in the CNGS crystal. In contrast, it is expected that the absorption of 350 nm is related to a cation or anion defect. PL-Mapping indicated the emission around 400 nm by excitation at 270 and 350 nm wavelengths. The emission at 400 nm is considered to originate from trapped electron at an anion or cation defect. The emission of the Alpha-ray excited spectra was very similar in comparison with PL-Mapping.
AB - The Ca 3NbGa 3Si 2O 14 (CNGS) crystal was grown by the micro-pulling down (μPD) method and the annealing effect on physical properties of CNGS crystal was investigated in this study. And the effects of oxygen content on the physical properties were systematically studied. Additionally, Photoluminescence (PL)-Mapping and radioluminescence spectra of CNGS were observed. The absorption peaks were observed around 350 and 500 nm. This absorption at 500 nm was very sensitive to a quantity of excess oxygen in the CNGS crystal. In contrast, it is expected that the absorption of 350 nm is related to a cation or anion defect. PL-Mapping indicated the emission around 400 nm by excitation at 270 and 350 nm wavelengths. The emission at 400 nm is considered to originate from trapped electron at an anion or cation defect. The emission of the Alpha-ray excited spectra was very similar in comparison with PL-Mapping.
KW - A1. Alpha-ray response
KW - A1. Annealing effect
KW - B1. Langasite
KW - B2. Optical property
KW - B2. Scintillation property
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U2 - 10.1016/j.jcrysgro.2012.01.029
DO - 10.1016/j.jcrysgro.2012.01.029
M3 - Article
AN - SCOPUS:84863314016
SN - 0022-0248
VL - 352
SP - 129
EP - 132
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
IS - 1
ER -