Radiation damage and sensitization effects on thermoluminescence of LiF:Mg,Ti (TLD-700)
作者： M.A. Farag , A.M. Sadek , Hany.A. Shousha , A.A. El-Hagg , M.R. Atta
DOI: 10.1016/J.NIMB.2017.06.018
关键词: Irradiation 、 Sensitization 、 Thermoluminescence 、 Radiochemistry 、 Materials science 、 Furnace anneal 、 Dosimeter 、 Annealing (metallurgy) 、 Radiation damage 、 Thermoluminescent dosimeter
摘要: Abstract The radiation damage effects and enhancement the thermoluminescence (TL) efficiency of LiF:Mg,Ti (TLD-700)dosimeters via sensitization method were discussed. Attempts to eliminate made using different types annealing processes. results showed that after irradiating dosimeters with dose > 250 Gy 60Co gamma source, observed. sensitivity total area under curve was decreased by a factor ∼0.5 irradiation at pre-test dose 2 kGy. However, on each glow-peak are different. 2 only peak not affected high-dose irradiation. It has been shown degree effect is related maximum dose-response function, f ( D ) max glow-peak. In general, significant observed for glow-peaks high . Post-irradiation anneal 280 °C 30 min causes dramatic shape glow-curve as well dosimeters. An increasing ∼35 in Improving 7 of∼22 dominant On other hand, an factors ∼2.5 ∼4 found peaks 5 respectively. decreasing 3 4. At levels >250 Gy, very strange intensity tail high-temperature region glow-curves. readout enough remove this tail. While, furnace could but
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