Nature of radiation resistance of LFS oxyorthosilicate crystals doped with Ce,Sc, Ca,and Y ions |
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| Authors: | Yu. D. Zavartsev M. V. Zavertyaev A. I. Zagumenniy A. F. Zerrouk V. A. Kozlov S. A. Kutovoi N. V. Pestovskii A. A. Petrov S. Yu. Savinov |
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| Affiliation: | 1.Prokhorov General Physics Institute,Russian Academy of Sciences,Moscow,Russia;2.Lebedev Physical Institute,Russian Academy of Sciences,Moscow,Russia;3.Zecotek Imaging Systems Pte Ltd,Division of Zecotek Photonics Inc.,Vancouver,Canada;4.Moscow Institute of Physics and Technology,Dolgoprudnyi, Moscow oblast,Russia |
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| Abstract: | Optical and luminescence characteristics of Lu2+2ySi1-yO5+y (LFS) scintillation crystals are studied before and after irradiation with doses to 45 Mrad from a 60Co source. LFS crystals were doped with Ce3+, Sc3+, Ca2+, and Y3+ ions with various concentrations. The dependence of the radiation resistance of LFS crystals on Ce ion concentration is detected. For the crystal of composition Ce:Sc:Ca:Y:LFS, it was found that its optical transmission (OT) and pulsed cathodoluminescence (PCL) spectra before irradiation do not differ from the spectra measured after irradiation with a dose of 45 Mrad within experimental error. The nature of the radiation resistance of rare-earth lutetium oxyorthosilicates (LFS) is discussed. |
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