Abstract
Lithium fluoride crystals used as thermoluminescent dosimeters show a clear energy dependence which is a function of the radiation dose. Dosimeters are more sensitive to low than to high energy radiation at low dose, of equal sensitivity at some intermediate dose range, and less sensitive at high dose. The prior annealing history of the crystals influences their absolute sensitivity and also their dose-dependence which can be minimized by proper choice of annealment time and temperature. Thus, when LiF is used as a dosimeter for different energy radiations or in a radiation field consisting of high and low energy components, the influence of energy dependence, but also of dose must be known and considered.
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