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KMID : 0364920170420010069
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Journal of Radiation Protection and Research
2017 Volume.42 No. 1 p.69 ~ p.76
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Development and Performance Testing of a Time-resolved OSL Measurement System
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Hong Duk-Geun
Kim Myung-Jin
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Abstract
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Background: Time-resolved optically stimulated luminescence (TR-OSL) is a very useful method for calculating the lifetimes of crystalline quartz and feldspar.
Materials and Methods: A compact TR-OSL system was developed, comprising a heater assembly manufactured using Kanthal wire, 2 powerful blue light-emitting diodes (LED, LXHLPB02) for optical stimulation equipped with VIS liquid light guides, and a photomultiplier tube combined with an optical filter for luminescence detection. A pulse generated from the data acquisition board (NI PCI 6250) was used to initiate on/off signals in LED and TR-OSL measurements.
Results and Discussion: The TR-OSL and background signals measured using this TR-OSL system using quartz samples were very similar to those reported in a previous study. Additionally, the lifetimes of the build-up and TR-OSL signals were calculated as 27.4 ± 2.2 μs and 30.3 ± 0.6 μs, respectively, in good agreement with the findings of a previous study.
Conclusion: It was concluded that the developed TR-OSL system was very reliable for TR-OSL signal measurements and lifetime calculations.
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KEYWORD
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Time-resolved OSL, Pulse stimulation, Lifetime, Quartz
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