Sorting a large set of heavily used LiF:Mg,Ti thermoluminescent detectors into repeatable subsets of similar response.

A set of 920 heavily used LiF:Mg,Ti thermoluminescent dosimeters (TLDs) was placed into a polymethyl methacrylate (PMMA) plate attached to a 40×40×15cm PMMA phantom and irradiated to 4.52mGy using a Cs source. This was repeated three times to determine the mean and standard deviation of each TLD׳s sensitivity.