Optical and scintillation properties of Sr3BGa3Si2O14 (B = Nb,Ta) single crystals |
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| Affiliation: | 1. Institute for Materials Research, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan;2. New Industry Creation Hatchery Center (NICHe), Tohoku University, 6-6-10, Aramaki, Aoba, Aoba-ku, Sendai, Miyagi, 980-8579, Japan;3. C&A Corporation, 6-6-40, Aramaki, Aoba, Aoba-ku, Sendai, Miyagi, 980-8579, Japan;1. Institute of Physics, University of Tartu, 14c Ravila, 50411 Tartu, Estonia;2. A.M. Prokhorov General Physics Institute RAS, 38 Vavilov Str., 119991, Moscow, Russia;3. University of Science and Technology of China, Hefei, 230026, PR China;4. P. N. Lebedev Physical Institute, 53 Leninskiy Prospekt, 119991 Moscow, Russia;1. School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia;2. Geology Department, School of Mines, Federal University of Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, MG 35400-00, Brazil;1. Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;2. Tokuyama Corp, 1-1 Mikage-cho, Shunan-shi, Yamaguchi 745-8648, Japan;3. Kyusyu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu-shi, Fukuoka 808-0196, Japan;4. Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;1. Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland;2. Institute of Applied Physics, Military University of Technology, Kaliskiego 2, 00-908 Warszawa, Poland;1. State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China;2. College of Information Science and Engineering, Guilin University of Technology, Guilin, 541004, China |
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| Abstract: | Optical and scintillation properties of Sr3NbGa3Si2O14 [SNGS] and Sr3TaGa3Si2O14 [STGS] single crystals with the langasite-type crystal structure were investigated as a novel scintillator materials. In the transmittance spectra of the SNGS and STGS polished specimens, absorption peaks around 380 and 505 nm were observed and the absorptions are considered to be attributable to the excess oxygen in the crystals. An emission peak around 420 nm was observed in the X-ray radioluminescence spectrum of the SNGS crystal. On the other hand, there was an emission peak around 335 nm in the X-ray radioluminescence spectrum of the STGS crystal. |
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| Keywords: | Scintillator Single crystal Langasite-type |
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