Thermoluminescence and scintillation time profiles of BaF2:Ce

In this communication we present results of measurements of low temperature thermoluminescence, isothermal decays, steady state radioluminescence yield and scintillation time profiles at various temperatures on two scintillator materials, BaF2:Ce and undoped BaF2. We find that all these results can be consistently interpreted in the frame of a model that includes several relatively shallow charge traps. We have identified and characterized one particular shallow trap that causes the decay of the dominant scintillation component of BaF2:Ce to be slower than radiative, as well as a set of others that are responsible for even slower components in the scintillation time profile of this material, (author)