Scintillation and Thermoluminescence Properties of a New Scintillator YPS:Ce

Cerium doped yttrium pyrosilicate Y_2Si_2O_7:Ce(YPS) single crystal was obtained through the floating zone method.The scintillation and thermoluminescence(TL) properties of YPS:Ce were studied.The scintillation and optical properties of YPS:Ce crystal were characterized by light output,decay time and transmittance.Its potential application prospect as scintillation material was also evaluated.It was noticed that the decay time of YPS:Ce was about 30.16 ns,which was the fastest value in the cerium doped silicate scintillators.The traps in YPS:Ce were studied through TL spectrum.Three traps were detected in the temperature range of 300-500 K,corresponding to three trap in YPS:Ce sample.The physical parameters of these traps(including energy level,frequency factor) were determined through fitting the 2D(temperature-luminescence intensity) TL curve.Combined with 3D(temperature-wavelength -luminescence intensity) TL spectra,the TL mode of YPS:Ce sample was proposed.