Scintillation properties of Ce:(La,Gd)2Si2O7 at high temperatures

Temperature dependence of scintillation properties was investigated for (Ce0.01, Gd0.90, La0.09)2Si2O7 grown by floating zone method. The light output over 35,000 photons/MeV was found constant in the temperature range from 0 °C to 150 °C. In addition, FWHM energy resolution of Ce:La-GPS (roughly 7-8%) at 662 keV remained constant up to 100 °C. Thus, this crystal can be applied to oil well logging or other radiation detection application at high temperature conditions.