Preliminary results towards the equivalence of transformed continuous-wave Optically Stimulated Luminescence (CW-OSL) and linearly-modulated (LM-OSL) signals in quartz |
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Authors: | George Kitis George S Polymeris Nafiye G Kiyak Vasilis Pagonis |
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Institution: | 1.Nuclear Physics Laboratory,Aristotle University of Thessaloniki,Thessaloniki,Greece;2.Faculty of Science and Arts, Physics Department,I?IK University,?ile,Istanbul, Turkey;3.Physics Department,McDaniel College,Westminster,USA |
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Abstract: | The present paper presents a comparative experimental study of two commonly measured Optically Stimulated Luminescence (OSL)
signals in quartz. The experimental study measures both the continuous wave OSL (CW-OSL) and the linearly modulated (LM-OSL)
signals from the same quartz sample for a range of stimulation temperatures between 180 and 280°C, while the former is transformed
to pseudo LM-OSL (ps LM-OSL). A computerized deconvolution curve analysis of the LM-OSL and ps LM-OSL signals was carried
out, and the contributions of several OSL components to the initial OSL signal (0.1 s) were shown to be independent of the
stimulation temperature used during the measurement. It was also found that the composite OSL (0.1 s) signal consists mainly
of the first two OSL components present in the OSL curves. The equivalence of the ps LM-OSL (transformed CW-OSL) and of LM-OSL
measurements was also examined by an appropriate choice of the experimental stimulation times, and of the stimulation power
of the blue LEDs used during the measurement. |
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