Further investigations on IR-RF

• Verfasst von: Murari, Madhav Krishna [VerfasserIn]
• Verfasst von: Kreutzer, Sebastian [VerfasserIn]
• Verfasst von: Fuchs, Markus [VerfasserIn]
• Titel: Further investigations on IR-RF
• Titelzusatz: Dose recovery and correction
• Verf.angabe: Madhav Krishna Murari, Sebastian Kreutzer, Markus Fuchs
• E-Jahr: 2018
• Jahr: 15 December 2018
• Umfang: 10 S.
• Fussnoten: Gesehen am 27.03.2025
• Titel Quelle: Enthalten in: Radiation measurements
• Ort Quelle: Amsterdam [u.a.] : Elsevier Science, 1994
• Jahr Quelle: 2018
• Band/Heft Quelle: 120(2018), Seite 110-119
• ISSN Quelle: 1879-0925
• DOI: doi:10.1016/j.radmeas.2018.04.017
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Correction methods
• Sach-SW: Dose recovery
• Sach-SW: Infrared radiofluorescence (IR-RF)
• K10plus-PPN: 1920718087

Abstract

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 3,600Gy 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.