A dynamical de-excitation process for optically excited electrons in F cent
ers in KCl is studied by using time-resolved polarization spectroscopy. The
ordinary luminescence (OL) and the hot luminescence (HL) in the OL region
are separated from a resonant secondary radiation, and the HL is decomposed
into two components with different behaviors. They are the HL in a short t
ime after excitation and an emission from 2p-like states after a long time
from excitation. The dynamics of the optical excitation is interpreted phen
omenologically in terms of a configuration coordinate model. (C) 2000 Elsev
ier Science B.V. All rights reserved.