Scintillation from NaI Nanoparticles Formed in CsI:Na Thin Films : Optical Properties of Condensed Matter
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概要
- 論文の詳細を見る
We have investigated the scintillation mechanism of Na-doped CsI (CsI:Na) thin films grown by vacuum deposition from the aspects of their optical and structural properties. It is found from measurements of X-ray excitation luminescence that the Na-related band with the peak energy of 2.95 eV, which is conventionally used for scintillators, is markedly enhanced by heat treatment. The results of atomic force microscope measurements clearly indicate that the heat treatment causes the formation of nanoparticles. Considering the excitation spectrum of the Na-related luminescence, we conclude that the scintillation of CsI:Na originates from the self-trapped exciton in NaI nanoparticles, which presents a novel model of the scintillation mechanism.
- 社団法人応用物理学会の論文
- 2002-03-01
著者
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Miyoshi Takashi
Department 4 Technology Research Division 2 Honda R&d Co. Ltd. Automobile R&d Center
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Nakayama Masaaki
Department Of Applied Physics Faculty Of Engineering Osaka City University
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Nakayama Masaaki
Department Of Applied Physics Graduate School Of Engineering Osaka City University
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Nishimura Hitoshi
Department Of Applied Physics Osaka City University
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Miyoshi Takashi
Department Of Applied Physics Graduate School Of Engineering Osaka City University
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ANDO Maoaki
Department of Applied Physics, Graduate School of Engineering, Osaka City University
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HIRAI Jun
Department of Applied Physics, Graduate School of Engineering, Osaka City University
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Nishimura Hitoshi
Department Of Analytical And Bioinorganic Chemistry Kyoto Pharmaceutical University
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Nishimura Hitoshi
Department Of Applied Physics Graduate School Of Engineering Osaka City University
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Hirai Jun
Department Of Applied Physics Graduate School Of Engineering Osaka City University
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Ando Maoaki
Department Of Applied Physics Graduate School Of Engineering Osaka City University
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Ando Naoaki
Department of Applied Physics, Graduate School of Engineering, Osaka City University
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Ando Naoaki
Department Of Applied Physics Graduate School Of Engineering Osaka City University
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