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A comparison of single and multiple aliquot TT-OSL data sets for sand-sized quartzfrom the Arabian Peninsula
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
2011 (English)In: Radiation Measurements, ISSN 1350-4487, E-ISSN 1879-0925, Vol. 46, no 6-7, 573-579 p.Article in journal (Refereed) Published
Abstract [en]

The quartz OSL signal from dune sands from Saudi Arabia and Oman start to saturate at doses of about100 Gy. In order to try to date dune sands with greater expected doses, a previously published,single-aliquot, regenerative-dose protocol (SAR) for thermally-transferred optically stimulatedluminescence (TT-OSL) was tested. Dose recovery tests, recycling and recuperation ratios showed robustfunctioning and dose response curves demonstrated the potential to extend the dose range to beyond600 Gy. Multiple aliquot additive dose (MAAD) TT-OSL protocols were used to test for sensitivity changesin the SAR TT-OSL protocol up to doses of 1200 Gy. A strong dose dependent deviation of the SAR TT-OSLrelative to the MAAD TT-OSL dose response is observed. Comparison of the TT-OSL and OSL sensitivitydata obtained from the MAAD and SAR data sets shows a lack of proportionality between TT-OSL and OSLfor the SAR data which will result in a problem when SAR dose response curves are constructed usingmany regeneration points with doses above 300 Gy.

Place, publisher, year, edition, pages
2011. Vol. 46, no 6-7, 573-579 p.
National Category
Physical Sciences
Research subject
Nuclear Physics
Identifiers
URN: urn:nbn:se:su:diva-69347DOI: doi.org/10.1016/j.radmeas.2011.03.020OAI: oai:DiVA.org:su-69347DiVA: diva2:476232
Available from: 2012-01-11 Created: 2012-01-11 Last updated: 2017-12-08Bibliographically approved

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