Energy Transfer in Alkali Halide Scintillators by Electron-Hole Diffusion and Capture

This paper reviews recent calculations and experiments dealing with charge transport and capture in activated alkali halide scintillators. Both electrons and holes are captured at thallium sites in crystals such as KI(Tl) and NaI(Tl). The kinetics of charge transport is governed either by the diffusive motion of the self-trapped hole, or by the release of electrons from a thallium site.