Thermoluminescence properties of beta particle irradiated Ca3Al2O6 phosphor relative to environmental dosimetry
| Autor: | Ümit H. Kaynar, S. Benourdja, Mustafa Topaksu, M. Bakr, A. Canimoglu, Ayman Hammoudeh, Mehmet Yüksel, Z.G. Portakal-Uçar, Mehmet Ayvacıklı, Nurdogan Can |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Diffraction
Materials science Biophysics Analytical chemistry Phosphor 02 engineering and technology General Chemistry Activation energy 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Kinetic energy 01 natural sciences Biochemistry Thermoluminescence Atomic and Molecular Physics and Optics 0104 chemical sciences Beta particle Dosimetry Irradiation 0210 nano-technology |
| Zdroj: | Journal of Luminescence. 227:117565 |
| ISSN: | 0022-2313 |
| Popis: | Undoped Ca3Al2O6 phosphor was successfully synthesized through a gel-combustion method using different fuels. It was characterized by X-ray diffraction (XRD) technique and its cubic phase structure was confirmed from XRD pattern. TL data were recorded from room temperature (RT) to 500 °C in the heating rate of 2 °C/s. The glow curves of Ca3Al2O6 sample exposed to different beta doses (0–200 Gy) exhibited a significant glow peak at about 184 °C. The TL intensity of the glow peak exhibited very good linearity between 0.1 and 10 Gy. Following this, it was decreased at higher doses which was referred to this effect as monotonic dose dependence. Initial rise (IR), peak shape (PS), and variable heating rate (VHR) methods were used to estimate trapping parameters. Computerized glow curve deconvolution (CGCD) method via TLAnal software was also applied to estimate the number of peaks and kinetic parameters corresponding to the main glow curve in Ca3Al2O6 sample. The trapping activation energy of the main dosimetric peak was calculated to be around 1.30 eV for all methods. Present findings confirm that Ca3Al2O6 host is a promising candidate for applications in environmental dosimetry as one depicts good TL dose response with adequate sensitivity and linearity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect