Time-resolved OSL of natural zircon: A preliminary study

Bulur, Enver
Sarac, B. E.
Time-resolved OSL (TR-OSL) from natural zircon (ZrSiO4) minerals was investigated using 445 nm blue laser light for stimulation. Analyses of the TR-OSL spectra have showed that the decay is composed of two exponential components with lifetimes varying around similar to 17 mu s and around similar to 110 mu s respectively. The behaviour of these signal components, was examined under various sample treatments and experimental conditions. Preheating experiments showed that the OSL signal is stable up to temperatures similar to 250 degrees C then becomes unstable. The dose response of the TR-OSL signal from zircon was determined in the range from 1 Gy to 1 kGy and observed to be increasing linearly. Practically, no effect of radiation dose on the lifetimes of signal components was observed. In addition, the effect of measurement temperature on the TR-OSL decay lifetimes was also investigated. Thermal quenching energies of the "fast" and the "slow" components were found to be very close to each other i.e. 0.18 and 0.24 eV respectively.


More on the TR-OSL signal from BeO ceramics
Bulur, Enver (Elsevier BV, 2014-07-01)
Time Resolved Optically Stimulated Luminescence (TR-OSL) from Be ceramics was investigated using blue (445 nm) and near-IR light (852 nm) for stimulation. Stimulation spectrum of the TR-OSL signal - as measured in the interval 700 to 420 nm- was observed to increase monotonically with the decreasing stimulation wavelength. In addition to the "fast" and "slow" components observed with blue light stimulation, IR stimulated TR-OSL spectra of irradiated BeO ceramics were observed to have two components with ave...
Optically stimulated luminescence from BeO ceramics: An LM-OSL study
Bulur, Enver (Elsevier BV, 2010-01-01)
Optically Stimulated Luminescence (OSL) signals of BeO ceramics were investigated using continuous wave (CW) OSL and Linearly Modulated (LM) OSL It was found that both curves can be approximated using a linear combination of two first-order components. Experiments on the measurement temperature dependence have shown that these two components have nearly the same thermal quenching energies around 0.57 eV. Dependences of the OSL signal on preheat temperature and radiation dose were also examined. Thermal anne...
Time-resolved OSL studies on BeO ceramics
Bulur, Enver (Elsevier BV, 2013-12)
Time-Resolved Optically Stimulated Luminescence (TR-OSL) from BeO ceramics was investigated using a blue laser (445 nm) as stimulation light source. It was observed that, at relatively low dose levels (up to similar to 25 Gy) the TR-OSL decay curve can be approximated with a single exponential decay function with a lifetime of similar to 26 gs at room temperature. Beyond 25 Gy a new decay component with a lifetime of a similar to 2 ts was observed in addition to the similar to 26 mu s component. Thermal sta...
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Citation Formats
E. Bulur and B. E. Sarac, “Time-resolved OSL of natural zircon: A preliminary study,” RADIATION MEASUREMENTS, pp. 46–52, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47733.