Component resolved OSL dose response and sensitization of various sedimentary quartz samples |
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Affiliation: | 1. Faculty of Science and Arts, ISIK University, Istanbul, Turkey;2. Cultural and Educational Technology Institute, Archaeometry Laboratory, Tsimiski 58, 67100-Xanthi, Greece;3. Nuclear Physics Laboratory, Aristotle University of Thessaloniki, 54124-Thessaloniki, Greece |
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Abstract: | The structure of the linearly modulated optically stimulated luminescence (LM-OSL) signal was studied for four sedimentary quartz samples, collected from different sites around Istanbul, Turkey. Applying a computerized deconvolution analysis to the LM-OSL curves, at least six individual components of first-order kinetics were identified and photoionization cross-section of each component was evaluated. The OSL dose–response curve of each component for each quartz sample was obtained, showing a remarkable differentiation from component to component. The behavior of a highly dosed sample to successive LM-OSL measurements was also studied showing a stable recuperation signal in the position of the “slow” and “medium” components and high resistance to OSL bleaching of the “slow” component. The individual sensitivity of each component as a function of the activation temperature was obtained. The sensitivity of each component was normalized over the respective sensitivity of the glow-peak at 110 °C of quartz in order to investigate the ability of the 110 °C glow-peak to act as a correction factor for all components of the LM-OSL curves examined. |
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