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Making the invisible visible : observing the UV-reversal effect in quartz using radiofluorescence

Titelangaben

Friedrich, Johannes ; Kreutzer, Sebastian ; Schmidt, Christoph:
Making the invisible visible : observing the UV-reversal effect in quartz using radiofluorescence.
In: Journal of Physics D. Bd. 51 (2018) Heft 33 . - No. 335105.
ISSN 1361-6463
DOI: https://doi.org/10.1088/1361-6463/aacfd0

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Angaben zu Projekten

Projekttitel:
Offizieller ProjekttitelProjekt-ID
Modelling quartz luminescence signal dynamics relevant for dating and dosimetrySCHM3051/4-1

Projektfinanzierung: Deutsche Forschungsgemeinschaft

Abstract

The pre-dose effect is one of the most well-known phenomena in quartz luminescence. It refers to an increase in dose sensitivity subsequent to radiation pre-exposure and annealing. A theoretical description of this phenomenon exists since the 1970s and is widely used in recent luminescence models. However, also the opposite effect has been described, the less known 'UV-reversal' effect which reduces the luminescence sensitivity due to illuminating the sample with far UV light. Both effects were detected with thermoluminescence (TL) following a small test dose and observing the effect indirectly using the response of the 110 °C peak. We here present a more direct measurement of both phenomena via UV-radiofluorescence (UV-RF), which is the luminescence emitted during irradiation. Therefore, the need of a TL measurement is obsolete. Furthermore, we were able to calculate a time rate of eviction of holes from the luminescence centre and implement this value into existing models to obtain a more comprehensive description of quartz luminescence. Numerical simulations are in good agreement with experimental data.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: Luminescence; Radiofluorescence; Quartz; R; Simulation; Pre-dose; UV-reversal
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Geomorphologie
Profilfelder > Advanced Fields > Ökologie und Umweltwissenschaften
Profilfelder > Advanced Fields > Nichtlineare Dynamik
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften
Profilfelder
Profilfelder > Advanced Fields
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie
Eingestellt am: 20 Aug 2018 10:55
Letzte Änderung: 20 Aug 2018 10:55
URI: https://eref.uni-bayreuth.de/id/eprint/45529