TY - JOUR
T1 - Growth of Y2O3, Sc2O3 and Lu2O3 crystals by the micro-pulling-down method and their optical and scintillation characteristics
AU - Fukabori, Akihiro
AU - Chani, Valery
AU - Kamada, Kei
AU - Yanagida, Takayuki
AU - Yokota, Yuui
AU - Moretti, Federico
AU - Kawaguchi, Noriaki
AU - Yoshikawa, Akira
N1 - Funding Information:
This project was supported by GCOE (Global Center of Excellence) program for Materials Integration of the Ministry of Education, Culture, Sports, Science, and Technology of the Japanese Government. One of us (F.M.) is grateful to CARIPLO Foundation for the financial support in the framework of the project “Energy transfer and trapping processes in nanostructured scintillator materials” (2008–2011).
PY - 2011/3/1
Y1 - 2011/3/1
N2 - The growth of Y2O3, Sc2O3, and Lu2O3 single crystals using the micro-pulling-down method is reported. Crystallinity, optical transmittance, and scintillation characteristics including emission spectra, pulse height spectra, and decay kinetics under α-ray excitation of the grown crystals were studied. The light yields of Y2O3, Sc2O3, and Lu2O3 crystals were estimated from the pulse height spectra excited by 241Am 5.5 MeV α-rays, in about 920±92 ph/5.5 MeVα, 370±37 ph/5.5 MeVα, and 150±15 ph/5.5 MeVα, respectively. The scintillation decay times of Y2O 3, Sc2O3, and Lu2O3 crystals were estimated with following fast/slow parameters 30.1/184, 14.6/51.3, and 16.7 ns, respectively. Furthermore, α-ray imaging was performed using Y2O3 crystal.
AB - The growth of Y2O3, Sc2O3, and Lu2O3 single crystals using the micro-pulling-down method is reported. Crystallinity, optical transmittance, and scintillation characteristics including emission spectra, pulse height spectra, and decay kinetics under α-ray excitation of the grown crystals were studied. The light yields of Y2O3, Sc2O3, and Lu2O3 crystals were estimated from the pulse height spectra excited by 241Am 5.5 MeV α-rays, in about 920±92 ph/5.5 MeVα, 370±37 ph/5.5 MeVα, and 150±15 ph/5.5 MeVα, respectively. The scintillation decay times of Y2O 3, Sc2O3, and Lu2O3 crystals were estimated with following fast/slow parameters 30.1/184, 14.6/51.3, and 16.7 ns, respectively. Furthermore, α-ray imaging was performed using Y2O3 crystal.
KW - A1. Radiation
KW - A2. Growth from melt
KW - A3. Single crystal growth
KW - B1. Oxides
KW - B2. Scintillator materials
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U2 - 10.1016/j.jcrysgro.2010.10.211
DO - 10.1016/j.jcrysgro.2010.10.211
M3 - Article
AN - SCOPUS:79952738165
SN - 0022-0248
VL - 318
SP - 823
EP - 827
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
IS - 1
ER -