title: Uncertainties associated with the use of optically stimulated luminescence in personal dosimetry.
abstract: This study investigates several sources of uncertainty associated with the application of optically stimulated luminescence (OSL) to personal dosimetry. A commercial OSL system based on Al(2)O(3):C was used for this study. First, it is demonstrated that the concept of repeated evaluation (readout) of the same dosemeter, often referred to as 're-analysis', can introduce uncertainty in the re-estimated dose. This uncertainty is associated with the fact that the re-analysis process depletes some of the populated traps, resulting in a continuous decrease of the OSL signal with each repeated reading. Furthermore, the rate of depletion may be dose-dependent. Second, it is shown that the previously reported light-induced fading in this system is the result of light leaks through miniature openings in the dosemeter badge.
authors: The US Naval Dosimetry Center, Bethesda, MD 20889, USA.
authors: L
authors: L
authors: Benevides
authors: A
authors: A
authors: Romanyukha
authors: F
authors: F
authors: Hull
authors: M
authors: M
authors: Duffy
authors: S
authors: S
authors: Voss
authors: M
authors: M
authors: Moscovitch
mesh_terms: D003627:Data Interpretation, Statistical; D004307:Dose-Response Relationship, Radiation; D004867:Equipment Design; D006801:Humans; D008027:Light; D049449:Luminescence; D008422:Materials Testing; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods / Q000592:standards*; D011835:Radiation Protection / Q000379:methods / Q000592:standards*; D011874:Radiometry / Q000379:methods / Q000592:standards*; D015203:Reproducibility of Results; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation* / Q000379:methods / Q000592:standards; D035501:Uncertainty