COMPUTERIZED ANALYSIS OF LIF GR-200 TL SIGNALS - APPLICATION TO DOSE MEASUREMENTS IN THE MU-GY RANGE

The features of a simple program for the computerised analysis of the LiF GR-200 glow curve are described. The adverse influence of the high residual signals characteristic of this material has been effectively eliminated for doses in the range 0.5-300 mu Gy. This program for TL evaluation, together with some improvements in the reader temperature measurement and control, permit one to obtain very good dose results i n this dose range employing only reader anneal. The good dosimetric pe rformance achieved under these simple working conditions has been show n in a detailed experiment whose results are also presented here. Very reproducible ambient dose results have been obtained in real working conditions exposing GR-200 dosemeters for times ranging between five h ours and three months.