FIELD APPLICATION OF LIF-MG,CU,P (GR200A) AND LIF-MG,TI (TLD-100) THERMOLUMINESCENT MATERIALS IN ENVIRONMENTAL DOSIMETRY

Thermoluminescence (TL) dosemeters, placed about 1 m above the ground in selected outdoor sites, provide a simple tool for the measurement of the dose, due to both natural and man-made radiation, in the environment. Since the radiation doses to be monitored are usually low (0.3 to 0.8 mGy per year) the TL chips required for long-term dose measurements should be more sensitive, stable and inert to extreme climatic variations than those used for other applications. Comparison between the main features of two TL dosimetric materials, LiF:Mg,Ti (TLD-100) and LiF:Mg,Cu,P (GR200A), are reported. The field application was performed during a survey in the island of Pantelleria.