Thermoluminescence of colourles geological quartz

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Thesis Type: Postgraduate

Institution Of The Thesis: Orta Doğu Teknik Üniversitesi, Faculty of Arts and Sciences, Department of Physics, Turkey

Approval Date: 1994

Thesis Language: English

Student: VAROL YILMAZ

Supervisor: SALAHATTİN ÖZDEMİR

Abstract:

A better understanding of thermoluminescent behavior of quartz helps to become more aware of limitations and capabilities in the use of quartz thermoluminescence which is being utilized as a research tool in the dosimetric datation, mineral exploration and determination of point defects in quartz. In this thesis, the glow, thermal activation, growft, sensitization and desensitization curves of 100 °C peak in the colourless geological quartz following different irradiation and thermal treatments, and the effects of irradiation temperature on the 100 °C peak sensitivity have been studied. The results are discussed under the previously proposed model of competition-during-heating. The trap parameters are also calculated by using the heating rate method. Furthermore, some new results obtained from sensitization and desensitization effects suggest a possibility of electron transfer from deeper traps to the 100 °C peak traps. -Ill-Keywords : Thermoluminescence, Quartz, Thermal Activation, Sensiti zation, Desensitization, Trap Parameters, Competitor Traps. Science Code : 224. 06. 01 -IV-