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The Internal Dose Rate in Quartz Grains: Experimental Data and Consequences for Luminescence Dating

The Internal Dose Rate in Quartz Grains: Experimental Data and Consequences for Luminescence Dating AbstractThis work considers the impact of the internal alpha and beta dose rates in quartz grains obtained from sandy sediments on the results of luminescence dating. The internal dose rates reported here (ca. 0.01–0.21 Gy · ka−1) play a particularly important role, because of low (ca. 0.8–0.9 Gy · ka−1) or very low (ca. 0.4–0.6 Gy · ka−1) external dose rates. In these cases, the internal dose rates form a significant fraction of the total dose rates, often exceeding 10%. Ignoring this contribution would have made the considered luminescence ages artificially older. In our study, we measure both the internal alpha and beta contributions as the latter is usually neglected in the case of quartz. The dose rate measurements were performed using the innovative μDose system. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Geochronometria de Gruyter

The Internal Dose Rate in Quartz Grains: Experimental Data and Consequences for Luminescence Dating

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Publisher
de Gruyter
Copyright
© 2022 Agnieszka Szymak et al., published by Sciendo
ISSN
1897-1695
eISSN
1897-1695
DOI
10.2478/geochr-2022-0002
Publisher site
See Article on Publisher Site

Abstract

AbstractThis work considers the impact of the internal alpha and beta dose rates in quartz grains obtained from sandy sediments on the results of luminescence dating. The internal dose rates reported here (ca. 0.01–0.21 Gy · ka−1) play a particularly important role, because of low (ca. 0.8–0.9 Gy · ka−1) or very low (ca. 0.4–0.6 Gy · ka−1) external dose rates. In these cases, the internal dose rates form a significant fraction of the total dose rates, often exceeding 10%. Ignoring this contribution would have made the considered luminescence ages artificially older. In our study, we measure both the internal alpha and beta contributions as the latter is usually neglected in the case of quartz. The dose rate measurements were performed using the innovative μDose system.

Journal

Geochronometria – de Gruyter

Published: Jan 1, 2022

Keywords: luminescence dating; internal dose rate; dose rate; quartz

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