[en] Thermoluminescence dosimetry (TLD) is an accepted and widely used method in several fields of dosimetry. This acceptance can be attributed, in addition to its wide measuring range and energy independence, to its reliable technique. An aluminium oxide ceramics dosimeter was developed to measure high doses which can be evaluated by commercially available equipment. The dosimeter signal is linear up to several kGy (10⁵ rad) and has a satisfactory reproducibility. (author)