RETRIEVAL OF DOSIMETRIC INFORMATION FROM DISTORTED GLOW CURVES USING COMPUTERIZED GLOW CURVE DECONVOLUTION

Computerised glow curve deconvolution (CGCD) can be used to retrieve d osimetric information from glow curves distorted by various irregulari ties. These may include reader malfunction, abnormal background arisin g from various sources and other system malfunctions. This paper illus trates how the dosimetric information can be retrieved from these irre gular glow curves. The accuracy of the retrieved information depends, of course, on the extent of the damage to the glow curve. In LiF:Mg,Ti (TLD-100) for example, peaks 4 + 5 (the dosimetric peaks) are observe d over the temperature range of 400 K-500 K, i.e. 100 degrees Kelvin. Even for distortions over 20 K, i.e. 20% of the temperature range, the dosimetric information can be retrieved to an accuracy of approximate ly 1%.