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Start Over Author "Yokota Y" Journal journal of crystal growth
9 results on '"Yokota Y"'

9. Growth of Y2O3, Sc2O3 and Lu2O3 crystals by the micro-pulling-down method and their optical and scintillation characteristics

Author

Noriaki Kawaguchi, Akihiro Fukabori, Valery Chani, Kei Kamada, Akira Yoshikawa, Yuui Yokota, Federico Moretti, Takayuki Yanagida, Fukabori, A, Chani, V, Kamada, K, Yanagida, T, Yokota, Y, Moretti, F, Kawaguchi, N, and Yoshikawa, A

Subjects
Scintillation, Absorption spectroscopy, A1. Radiation, Analytical chemistry, Micro-pulling-down, B2. Scintillator material, Crystal growth, B1. Oxide, Scandium oxide, Emission spectroscopy, Condensed Matter Physics, Scintillation, Single crystals, Growth from melts, Crystal growth, Inorganic Chemistry, Crystal, chemistry.chemical_compound, Crystallinity, chemistry, Excited state, Materials Chemistry, A3. Single crystal growth, Crystallization, Scandium, Nuclear chemistry
Abstract

The growth of Y 2 O 3 , Sc 2 O 3 , and Lu 2 O 3 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 Y 2 O 3 , Sc 2 O 3 , and Lu 2 O 3 crystals were estimated from the pulse height spectra excited by 241 Am 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 Y 2 O 3 , Sc 2 O 3 , and Lu 2 O 3 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 Y 2 O 3 crystal.

Published
2011

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