Optically stimulated luminescence from quartz measured using the linear modulation technique
By E. Bulur, L. Bøtter-Jensen, A. Murray. 2000
138 citations recorded by the source corpus.
The optically stimulated luminescence (OSL) from heated natural quartz has been investigated using the linear modulation technique (LMT), in which the excitation light intensity is increased linearly during stimulation. In contrast to conventional stimulation, which usually produces a monotonically decreasing signal, linearly increasing the stimulation power gives peaks in the signal as a function of time. In cases where the OSL signal contains more than one component, the linear increase in power of the stimulation light may result in a curve containing overlapping peaks, where the most easily stimulated component occurs at a shorter time. This allows the separation of the overlapping OSL components, which are assumed to originate from different traps. The LM-OSL curve from quartz shows an initial peak followed by a broad one. Deconvolution using curve fitting has shown that the composite OSL curve from quartz can be approximated well by using a linear combination of first-order peaks. In addition to the three known components, i.e. fast, medium and slow components from continuous-wave-OSL studies, an additional slow component is also identified for the first time. The dose responses and thermal stabilities of the various components are also studied.
Subfields: Biomedical Engineering, Ceramics and Composites, Geophysics
View Paper: https://www.semanticscholar.org/paper/ed92819736d2d83bf7861c86dee99f543edfeca9
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In Geophysics
Citations in the corpus
- Optical dating in archaeology: thirty years in retrospect and grand challenges for the future (2015, background): “Several slow 815 components have been identified in quartz, one of which (component S3 of Singarayer and Bailey, 2003, 816 2004) is associated with traps that saturate at much higher doses than those responsible for the fast 817 component (Bailey, 2000; Bulur et al., 2000; Singarayer et al., 2000).”