Abstract
Identifying systematic errors that are introduced by the measurement equipment is a necessary prerequisite for reproducible measurements and reliable results. However, technical artefacts often remain unpublished. Here we report on a sudden change of luminescence intensity observed while measuring IR-RF signals from K-feldspar extracts. The measurements were carried out on a lexsyg research reader. A lateral movement of the sample carrier up to 0.5mm relative to the photomultiplier tube and the irradiation source, causes a change in the sample geometry. This movement results in inter-aliquot scatter during the measurement of IR-RF. Two solutions are discussed to remove this effect: (I) data post-processing and (II) design change by the manufacturer. Our study so far is limited to IR-RF measurements on a single luminescence reader and suggests due caution in the identification of such systematic errors.
Original language | English |
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Pages (from-to) | 20-30 |
Number of pages | 11 |
Journal | Ancient TL |
Volume | 35 |
Issue number | 1 |
Publication status | Published - 30 Jun 2017 |
Externally published | Yes |
Keywords
- luminescence
- infrared radiofluorescence
- instrumentation