| Online-Ressource |
Verfasst von: | Kreutzer, Sebastian [VerfasserIn]  |
| Schmidt, Christoph [VerfasserIn]  |
| DeWitt, Regina [VerfasserIn]  |
| Fuchs, Markus [VerfasserIn]  |
Titel: | The a-value of polymineral fine grain samples measured with the post-IR IRSL protocol |
Verf.angabe: | Sebastian Kreutzer, Christoph Schmidt, Regina DeWitt, Markus Fuchs |
E-Jahr: | 2014 |
Jahr: | October 2014 |
Umfang: | 12 S. |
Illustrationen: | Diagramme |
Fussnoten: | Online veröffentlicht: 30. Juni 2014 ; Gesehen am 01.04.2025 |
Titel Quelle: | Enthalten in: Radiation measurements |
Ort Quelle: | Amsterdam [u.a.] : Elsevier Science, 1994 |
Jahr Quelle: | 2014 |
Band/Heft Quelle: | 69(2014) vom: Okt., Seite 18-29 |
ISSN Quelle: | 1879-0925 |
Abstract: | Recent post-IR IRSL (pIRIR) dating studies using polymineral fine grains assumed that the a-values obtained for the IRSL signal at 50 °C and the pIRIR signal at higher temperatures (e.g. 225 °C) are identical. However, the a-value of a sample depends on the stimulation method, and the assumption mentioned above remains to be tested. Using five polymineral fine grain samples, this study investigates whether a common a-value can be used for both the IR and the pIRIR signals. Applying the pIRIR protocol, the a-values were measured with three different methods of signal resetting (optical bleaching, end of SAR cycle, heating). In addition, uncorrected α- and β-irradiation induced growth curves were determined for three samples and fitted with single saturating exponential functions. For the investigated samples we found significant mean differences, 0.023 ± 0.012 and higher, in the a-values determined for the IR50 and pIRIR225 signals. Synthetic a-values deduced from uncorrected multiple-aliquot dose response curves seem to confirm this observation. Although, in summary, our results indicate that the practice of using a common a-value should be carefully re-considered, the physical reasons remain to be determined. |
DOI: | doi:10.1016/j.radmeas.2014.04.027 |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext: https://doi.org/10.1016/j.radmeas.2014.04.027 |
| Volltext: https://www.sciencedirect.com/science/article/pii/S135044871400184X |
| DOI: https://doi.org/10.1016/j.radmeas.2014.04.027 |
Datenträger: | Online-Ressource |
Sprache: | eng |
Sach-SW: | -value |
| Fine grain |
| Loess |
| Luminescence dating |
| Polymineral |
| post-IR IRSL |
| α-efficiency |
K10plus-PPN: | 192092017X |
Verknüpfungen: | → Zeitschrift |
¬The¬ a-value of polymineral fine grain samples measured with the post-IR IRSL protocol / Kreutzer, Sebastian [VerfasserIn]; October 2014 (Online-Ressource)