Starting from a near-normal incidence transmittance measurement, a simple d
ipole-field interaction model has been applied to quantitatively evaluate t
he single contributions of different kinds of electronic defects to the ove
rall refractive index change of the coloured volume of a low-energy electro
n irradiated LiF crystal. (C) 2001 Elsevier Science B.V. All rights reserve
d.