The investigation of the effects of pre-irradiation annealing procedures on thermoluminescence dosimetric properties of different natural samples

Many thermoluminescence properties of dosimetric minerals may be affected by external effects and environmental condition. Annealing is one of the most known external effects and has different process. As a result of annealing process, the defect distribution of a specimen can be altered and thereby its sensitivity changes. In spite of fact that standard annealing procedures exist for the dosimetric purposes of the synthetic materials, these can be different for natural minerals. As the thermoluminescence properties of different natural minerals are unequal, different thermoluminescence properties are observed for the same natural minerals collected in the different region of the world. Therefore, annealing may alter the thermoluminescence properties of each natural minerals, differently. This thesis reveals that how the thermoluminescence properties of different natural minerals are affected by different pre-irradiation annealing processes. The origins of natural minerals used in this thesis were different and obtained from the different regions of Turkey. The thermoluminescence properties of four different natural minerals which are calcite minerals in sand used in making roasted chickpea, fluorapatite minerals in tooth enamel, plagioclase minerals in basaltic rocks and biogenic minerals in seashell have been studied under different thermal treatments.