Glow curve deconvolution for the routine readout of LiF:Mg,Ti thermoluminescent detectors

Commercial hot gas thermoluminescence dosemeter readers used in individual monitoring services are designed to process a high number of thermoluminescence detectors within a short time period. High heating gas rates and short processing times lead to non-linear heating profiles of the detector. This paper describes a computed glow curve deconvolution program especially designed for fitting those non-linear heating profiles. The program is based on a spreadsheet application (Excel, 2013) using a first order kinetics model. The program was tested for the detector material LiF:Mg,Ti for five different gas heating rates (1-30 degrees C/s) and three different detector thicknesses (0.15-0.89 mm). In total 1200 glow curves where investigated. The described deconvolution process allows to derive glow curve parameters which are more or less independent of the used heating profile and detector thickness. It is intended to use the described procedure for quality checks and dose calculations of routine TLD5 in the future. (C) 2017 Elsevier Ltd. All rights reserved.