Luminescence properties of Tb3+-doped oxyfluoride scintillating glasses.

Abstract: Transparent oxyfluoride glasses doped with Tb3+ were prepared by melt quenching method. The transmittance spectra show the glasses have good transmittance in the visible spectrum region. The emission spectra under 376nm light and X-ray excitations were recorded. Tb3+ doped oxyfluoride glasses show intense green emissions under both excitations. The optimum concentrations of Tb3+ ion are around 8mol% and around 10mol% under 376nm light excitation and X-ray excitation, respectively. The lifetimes of 541nm emission of oxyfluoride glasses doped with Tb3+ are in the range from 2.65ms to 3.02ms. The results indicate that Tb3+-doped oxyfluoride glasses could be an X-ray scintillating material suitable to X-ray detection for slow event. [Copyright &y& Elsevier]