Thermoluminescence Properties of Quartzite Rock after β-irradiation
Abstract
In the present study, the thermoluminescence
characteristics of natural quartzite collected from Karaisalı (Adana) in Turkey
were investigated after β irradiation at room temperature with the purpose to
use as radiation dosimetry. The glow curve of quartzite mineral shows two peaks
at 110 oC and 250 oC and a shoulder at 375 oC,
explicitly. The resulting peaks, which were examined using the computer glow
curve deconvulation (CGCD) method, were deconvuluted and kinetic parameters
(activation energy Ea,
frequency factor (s) and kinetic
degree (b)) were determined. After
CGCD methods, it was seen that the glow curve suporposed at least eight
peaks. Additionally, kinetic parameters
were determined using by Arrhenius plot obtained from initial rise (IR) method.
In this study, it is shown that there is a correspondence between kinetic
parameters calculated by IR method and peaks deconvoluated by CGCD technique in
low temperature region (P1-P3). Additionally, reusability test was conducted to
investigate its usability as a dosimetric material, and a change of 2% was
observed in the results of 10 repeated times. Besides to the characterization
of this sample X-ray diffraction (XRD) and scanning
electron microscopy (SEM) - energy dispersive X-ray (EDX) results were
investigated.
Keywords
References
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