Energy transfer in inorganic scintillators

The conversion efficiency of scintillators with several types of electronic excitations is considered. The types and distribution of electronic excita tions created in CeF3 by the absorption of a high energy photon are reviewe d, the effect of the self-trapping processes on the energy transfer efficie ncy from the excitations in the fluorine subsystem is discussed, limitation s imposed on the scintillation yield by the coexistence of two types of exc itations are demonstrated. Comparison with the fluorescence excitation of L axCe1-xF3 and LuF3-Ce is made.