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Investigation of LiF, Mg and Ti (TLD-100) Reproducibility
M Sadeghi1, S Sina1, R Faghihi2
1Nuclear Engineering Department, School of Mechanical Engineering, Shiraz University, Shiraz, Iran.
Abstract:
LiF, Mg and Ti cubical TLD chips (known as TLD-100) are widely used for dosimetry purposes. The repeatability of TL dosimetry is investigated by exposing them to doses of (81, 162 and 40.5 mGy) with 662keV photons of Cs-137. A group of 40 cubical TLD chips was randomly selected from a batch and the values of Element Correction Coefficient (ECC) were obtained 4 times by irradiating them to doses of 81 mGy (two times), 162mGy and 40.5mGy. Results of this study indicate that the average reproducibility of ECC calculation for 40 TLDs is 1.5%, while these values for all chips do not exceed 5%.
