Abstract
LITHIUM fluoride powder is now being used extensively for thermoluminescent dosimetry of ionizing radiations because of its good tissue-equivalence with respect to photon energy, and its reported absence of fading1–3. We have found hitherto unreported changes of response with time, predominantly manifested by fading of the read-out by some 10–20 per cent at 3 weeks after irradiation, followed by a tendency to increase towards the initial value at 6–8 weeks. This fading can cause difficulties in practical use unless care is taken to read-out specimens at the same time after irradiation. The fading reported here is other than any occurring in the first 24 h.
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FOWLER, J., SHUTTLEWORTH, E., SVARCER, V. et al. Fading in Thermoluminescent Lithium Fluoride used for Radiation Dosimetry. Nature 207, 997–998 (1965). https://doi.org/10.1038/207997a0
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DOI: https://doi.org/10.1038/207997a0
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