The Characterization via X-Ray Luminesce, Thermoluminescence Kinetic Parameters and Structural Analysis of Aventurine a Form of Quartz

Abstract

In this study, in which the optical and luminescence properties of aventurine, a silicate-based mineral, were examined, the crystal structure of the mineral was examined by XRD analysis, its rheological properties and the elements it contained were determined by SEM-EDX analysis, and its structural properties were examined by FT-IR analysis. In order to determine the luminescence properties, radioluminescence (RL) and thermoluminescence (TL) methods were used and kinetic parameters were calculated. In the measurements taken in bulk and powder form of Aventurine, it was observed that the powder sample had a much better spectrum intensity, it was observed that the emission around 570 nanometers became much more pronounced in the powder sample. On the other hand, similar emissions were detected in both samples, though at different intensities. In TL analysis, it was observed that Aventurine was responsive to both X-ray and ultraviolet radiation at three different doses. While after X-ray irradiation, Aventurine exhibited TL glow curves with peaks at maximum temperatures of 90 oC and 250 oC, under UV irradiation the TL glow curves concentrated in the high-temperature region which is around 300 oC observed. Also; the TL kinetic parameters were reported; activation energy (E), the order of kinetics (b), and frequency factor (s) of the first peak have been determined in detail by using Computerized Glow Curve Deconvolution (CGCD) method.