INTERACTIVE KINETICS IN THERMOLUMINESCENCE (TL) AND ITS EFFECT ON GLOW CURVES AND THEIR GROWTH AS A FUNCTION OF DOSE

Glow curve calculations are presented for a system of interactive trap s in which the deep trap population is an order of magnitude greater t han that of the active TL traps. It is shown that the glow peak exhibi ts a first-order type of kinetic behaviour even when recombination doe s not predominate over retrapping. Under most of the dose ranges it is the recapture by the deep traps which is responsible for this kinetic behaviour. The likely reason for the apparent dominance of first-orde r kinetics appears to be the interaction between the active TL traps a nd the deep traps. Another important consequence of interactive kineti cs is that the growth of TL intensity with dose becomes supralinear. T he interactive nature of the traps thus provides an interpretation not only for the kinetic behaviour of the glow peaks but explains also th eir supralinearity.