Abstract
The possibilities of compensating for the energy dependence of a thermoluminescence detector are analysed and a method is described in detail where an energy dependent detector is situated in such a way that part of its volume is screened by a metal filter with high atomic number (0.5 mm Pb), and a part of the volume remains unscreened. In addition to compensating for the energy dependence, this method permits a considerable reduction of the directional dependence, achieved through the symmetric distribution of slots in the filter over the whole surface of the badge. Experimental results for energy and direction dependence measurements are presented; these indicate that the TL dosemeter can measure photon radiation doses within the energy range from 25 keV up to 3 MeV with an error which is unlikely to exceed ±25%. Finally, the calibration technique of the dosemeter is described and its application in dosimetric work are indicated.
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