Nature of radiation resistance of LFS oxyorthosilicate crystals doped with Ce, Sc, Ca, and Y ions

作者：Zavartsev Yu D; Zavertyaev M V; Zagumenniy A I; Zerrouk A F; Kozlov V A^*; Kutovoi S A; Pestovskii N V; Petrov A A; Savinov S Yu

来源：Bulletin of the Lebedev Physics Institute, 2016, 43(11): 336-339.

DOI：10.3103/S1068335616110051

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 Co-60 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.

• 出版日期2016-11