Thin Layer alpha-AI2O3:C Beta Dosemeters for the Assessment of Current Dose Rate in Teeth Due to 90Sr Intake, and Comparison with Electron Paramagnetic Resonance Dosimetry.
Radiat. Prot. Dosim.101, 507-513 (2002)
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The use of thin-layer alpha-Al2O3:C thermoluminescent detectors (TLDs) for the assessment of current beta dose rate ill human teeth due to Sr-90 intake is investigated. The teeth used in this study were collected front members of the Techa river population who were exposed to radiation as a result of releases of the Mayak plutonium production facilities (Southern Urals-Russia) between 1949 and 1956. The beta dose rates from different parts of the tooth (enamel. crown dentine, and root) were determined by storing the detectors over the samples in a shielded environment. The Cumulative dose measured by electron paramagnetic resonance (EPR) in different dental tissues is found to be proportional to current dose rate obtained front alpha-Al2O3:C thermoluminescence dosemeters. The retention of Sr-90 in various parts of the teeth is discussed.