TY - JOUR
T1 - Further investigations on IR-RF: Dose recovery and correction
AU - Murari, Madhav Krishna
AU - Kreutzer, Sebastian
AU - Fuchs, Markus
N1 - Funding Information:
The authors would like to thank to Sumiko Tsukamoto, Michel Lamothe, Margret Fuchs and Ingrid Stein for providing the samples for our experiments. Madhav K Murari and Markus Fuchs are supported for this work by German Research Foundation (DFG A/C: 62201694 ), and Sebastian Kreutzer is financed by a programme supported by the ANR - n ◦ ANR-10-LABX-52 . We thank two anonymous reviewers for their constructive suggestions for improving this manuscript.
Funding Information:
The authors would like to thank to Sumiko Tsukamoto, Michel Lamothe, Margret Fuchs and Ingrid Stein for providing the samples for our experiments. Madhav K Murari and Markus Fuchs are supported for this work by German Research Foundation (DFG A/C: 62201694), and Sebastian Kreutzer is financed by a programme supported by the ANR - n◦ ANR-10-LABX-52. We thank two anonymous reviewers for their constructive suggestions for improving this manuscript.
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/12/15
Y1 - 2018/12/15
N2 - We discuss the dose recovery behaviour of IR-RF from K-rich feldspar extracts from modern-analogue sediment samples. The zero-dose of these samples was confirmed from previous quartz OSL and feldspar IRSL measurements. In our experiments, the IR-RF curve (RFnat) from the naturally bleached sample was taken as a regenerated curve within dose recovery experiment. We report that the obtained dose varies by 15% to 23% from the given dose, when recovered from naturally bleached IR-RF curves. However, it matches with the IR-RF regenerated (RFreg) curve bleached with a solar simulator. We discuss the potential reasons for the observed differences and present two correction methods: background subtraction and vertical curve sliding. We conclude that a given dose can be successfully recovered up to 3,600 Gy if the vertical sliding method is applied. Our results further indicate that an applied signal correction by vertical sliding improves the overall accuracy of IR-RF dose estimations. The incorrect dose recovery of naturally bleached samples without signal correction implies that the estimated palaeodoses from natural samples may not be reliably reconstructed if no correction is applied
AB - We discuss the dose recovery behaviour of IR-RF from K-rich feldspar extracts from modern-analogue sediment samples. The zero-dose of these samples was confirmed from previous quartz OSL and feldspar IRSL measurements. In our experiments, the IR-RF curve (RFnat) from the naturally bleached sample was taken as a regenerated curve within dose recovery experiment. We report that the obtained dose varies by 15% to 23% from the given dose, when recovered from naturally bleached IR-RF curves. However, it matches with the IR-RF regenerated (RFreg) curve bleached with a solar simulator. We discuss the potential reasons for the observed differences and present two correction methods: background subtraction and vertical curve sliding. We conclude that a given dose can be successfully recovered up to 3,600 Gy if the vertical sliding method is applied. Our results further indicate that an applied signal correction by vertical sliding improves the overall accuracy of IR-RF dose estimations. The incorrect dose recovery of naturally bleached samples without signal correction implies that the estimated palaeodoses from natural samples may not be reliably reconstructed if no correction is applied
KW - Correction methods
KW - Dose recovery
KW - Infrared radiofluorescence (IR-RF)
UR - https://www.scopus.com/pages/publications/85049985076
U2 - 10.1016/j.radmeas.2018.04.017
DO - 10.1016/j.radmeas.2018.04.017
M3 - Article
SN - 1350-4487
VL - 120
SP - 110
EP - 119
JO - Radiation Measurements
JF - Radiation Measurements
ER -