Doubly doped BaY2F8:Er,Nd VUV scintillator |
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| Authors: | Jan Pejchal Martin Nikl Kentaro Fukuda Noriaki Kawaguchi Takayuki Yanagida Yuui Yokota Akira Yoshikawa Vladimir Babin |
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| Institution: | 1. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;2. Institute of Physics AS CR, Cukrovarnicka 10, 16253 Prague, Czech Republic;3. Tokuyama Corporation, Shibuya 3-chome, Shibuya-ku, Tokyo 150-8383, Japan;4. New Industry Creation Hatchery Center (NICHe), Tohoku University, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan;5. Sincrotrone Trieste S.C.p.A., Basovizza-Trieste 34012, Italy |
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| Abstract: | Doubly doped BaY2F8:Er,Nd scintillation crystals were grown by modified micro-pulling-down method. The Er co-doping was chosen to enhance the energy transfer from the host lattice to the Nd3+ luminescence center via the 5d-levels of Er3+, which can be enabled by the overlap of Er3+ 5d-4f emission spectrum with the Nd3+ 4f-5d absorption. The energy transfer was clearly evidenced in the BaY2F8:Er,Nd. The processes are complicated by energy migration to killer centres and/or cross-relaxation processes. The luminescence and energy transfer mechanism are discussed. |
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