AN INTERNATIONAL COMPARISON STUDY ON OSL DATING

Yıl 2019, Cilt: 31 Sayı: 2, 60 - 66, 31.12.2019

Ülkü Rabia Yüce

Öz

To compare our experiment results with other laboratories by
participating in international inter-laboratory comparison tests is an
important need to ensure the accuracy of our measurements. However, so far,
international comparison tests or measurements on OSL dating are unfortunately
organized very limited in number. The latest inter-laboratory comparison study
was conducted between 2006 and 2012 years by the Nordic Luminescence Laboratory
in Denmark. In this paper, within the scope of the aforementioned comparison
study, the result of Optical Stimulated Luminescence (OSL) dating of inter-
comparison sample based on quartz-rich aeolian and/or coastal marine sand
sample was presented. Equivalent dose (De) of the sample
was determined using Single Aliquot Regenerative Dose (SAR) protocol.  For the calculation of annual dose rate (Da),
concentrations of radioactive isotopes (U, Th, K) were measured by using a
high-purity germanium detector. OSL age was determined as 4530 ± 41 years for
the sample.  Consequently, within the error
limits, we have determined the age of the sample close to the expected age. By
participating in this comparison test, we have had the opportunity to compare our
results with other luminescence dating laboratories and to ensure the accuracy
of our results.  At the same time, we had
the chance to interpret each step of our dating measurements (preparation of
pure quartz minerals, determination of equivalent dose and annual dose etc.) on
an international scale, separately.

Anahtar Kelimeler

OSL dating, interlaboratory comparison, equivalent dose, quartz, sar

Kaynakça

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