Türkiye'deki telefon operatörlerin SIM kartlarinda kullanilan çiplerin termolüminesans özelliklerinin incelenmesi

The general purpose of this study is to make necessary measurements by HARSHAW 3500 Model TLD device which is present in our "Thermoluminescence and Optically Stimulated Luminescence Laboratory" then examine SIM card chips' thermoluminescence properties and analyze these samples as suitable or not for a dosimeter. We examined three SIM card chips of different operators which are Turkcell, Avea, and Vodafone. Thermoluminescence properties of samples such as dose responses of sample, effect of heating rate on samples, reproducibility of samples and fading properties were analyzed. For irradiation processes, 90Sr - 90Y ß radiation source was used for dose response, heating rate, reproducibility, and fading experiments. The main results from these experiments are all SIM card chips show the thermoluminescence properties, but only the Turkcell SIM card chip has good thermoluminescence properties as a dosimeter. However, that is not valid for Avea and Vodafone SIM card chips because of the bad results from experiments.