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The TL and room temperature OSL properties of the glow peak at 110°C in natural milky quartz: a case study

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<mark>Journal publication date</mark>01/2009
<mark>Journal</mark>Radiation Measurements
Issue number1
Volume44
Number of pages9
Pages (from-to)23-31
Publication StatusPublished
<mark>Original language</mark>English

Abstract

The LM-OSL signal of quartz, while measured at room temperature, is dominated by an intermediate, broad and intense OSL component, so that its contribution and general characteristics are derived very accurately. Through a series of dose-response, bleaching and thermal decay at room temperature experiments, in conjunction with curve fitting studies, a component resolved analysis is carried out studying the correlation between this specific component, termed as LM-OSL component C(2) and the 110 degrees C TL glow peak in quartz. The dose-response of these two luminescence components behaves exactly similar being linear at low doses and saturating at almost 100 Gy. Both signals decay exponentially under illumination, providing identical optical detrapping cross-section values. Residual of both luminescence signals after thermal decay at room temperature follows an exponential law, yielding similar mean half-lives. All previous luminescence features provide strong evidence for the electron trap being the same for both the 110 degrees C TL trap and the LM-OSL component C(2). The results of the present work are very promising and clearly support the possibility of extrapolating the TL pre-dose methodology to the OSL pre-dose effect using only the LM-OSL component C(2).