Information about the time which has elapsed since an external radiation exposure is useful in determining the time of occurrence of an abnormal exposure in personal and accident dosimetry. This information can be obtained from certain irradiated thermoluminescent dosemeters. A computational method based on decay rates of thermoluminescence glow peaks has been used to estimate a range of suitable values of trap lifetimes of low temperature glow peaks. This provides a basis for the selection of an appropriate thermoluminescent material to assess not only the absorbed dose from a radiation exposure but also the elapsed time. The results of experimental studies have been used to obtain additional information on decay rates as a function of energy, temperature, and absorbed dose.To be presented at 8th International Conference on Solid State Dosimetry
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