Dose-rate estimation using α-Al2O3:C chips: aftermath

• Verfasst von: Kreutzer, Sebastian [VerfasserIn]
• Verfasst von: Tribolo, Chantal [VerfasserIn]
• Verfasst von: Martin, Loïc [VerfasserIn]
• Verfasst von: Mercier, Norbert [VerfasserIn]
• Titel: Dose-rate estimation using α-Al2O3:C chips: aftermath
• Verf.angabe: Sebastian Kreutzer, Chantal Tribolo, Loïc Martin, Norbert Mercier
• E-Jahr: 2020
• Jahr: 2020-06-15
• Umfang: 10 S.
• Fussnoten: Im Titel sind die Zahlen 2 und 3 jeweils tiefgestellt ; Gesehen am 27.03.2025
• Titel Quelle: Enthalten in: Ancient TL
• Ort Quelle: Aberystwyth : [Verlag nicht ermittelbar], 1990
• Jahr Quelle: 2020
• Band/Heft Quelle: 38(2020), 1, Seite 1-10
• ISSN Quelle: 0735-1348
• DOI: doi:10.26034/la.atl.2020.539
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1920708200

Abstract

We present additional experiments for αAl2O3:C chips used to estimate in situ γ-dose rates. Our contribution supplements the article by Kreutzer et al. (2018) and presents results from previously announced follow-up experiments. (1) We investigate the divergent γ-dose rate results we obtained from cross-check experiments for one reference site. (2) We discuss the origin of encountered large inter-aliquot scatter using results from low-level background and calibration measurements. (3) We show that the chip geometries vary considerably, which may partly contribute to additional inter-aliquot scatter, regardless of an overall good reproducibility of results. (4) We report new source-calibration results after replacing the β-source housing of our measurement system, which resulted in an increase of the source dose rate at the sample position by ca 37%. GEANT4 simulations show that the increased dose rate is likely caused by an unfortunate fabrication tolerance of the shutter in front of the β-source, which, in combination with the chip geometry, significantly contributes to the observed inter-aliquot scatter. (5) Finally, we introduce a newly developed shiny application we use at the IRAMAT-CRP2A to analyse α-Al2O3:C measurements. The application is open-source and freely available.