LSO-CE FLUORESCENCE-SPECTRA AND KINETICS FOR UV, VUV AND X-RAY-EXCITATION

LSO-Ce fluorescence emission and excitation spectra and decay kinetics have been measured for UV, VUV and X-ray excitation at RT and 80 K. T he features of the fluorescence excitation spectra of two types of cer ium centres in the region 3 to 6 eV are analysed in the assumption of competitative absorption between them. It is shown that the centres ca n have similar absorption bands. Forbidden energy bandgap for LSO is e valuated to be not less than 6.5 eV.