Growth of Y2O3, Sc2O3 and Lu2O3 crystals by the micro-pulling-down method and their optical and scintillation characteristics
| Autor: | Noriaki Kawaguchi, Akihiro Fukabori, Valery Chani, Kei Kamada, Akira Yoshikawa, Yuui Yokota, Federico Moretti, Takayuki Yanagida |
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| Přispěvatelé: | Fukabori, A, Chani, V, Kamada, K, Yanagida, T, Yokota, Y, Moretti, F, Kawaguchi, N, Yoshikawa, A |
| Rok vydání: | 2011 |
| Předmět: |
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 |
| Zdroj: | Journal of Crystal Growth. 318:823-827 |
| ISSN: | 0022-0248 |
| DOI: | 10.1016/j.jcrysgro.2010.10.211 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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