On the dose rate dependence of radiofluorescence signals of natural quartz

Titelangaben

Friedrich, Johannes ; Fasoli, Mauro ; Kreutzer, Sebastian ; Schmidt, Christoph:
On the dose rate dependence of radiofluorescence signals of natural quartz.
In: Radiation Measurements. Bd. 111 (2018) . - S. 19-26.
ISSN 1350-4487
DOI: https://doi.org/10.1016/j.radmeas.2018.02.006

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Abstract

The general behaviour of the main UV emission during radiofluorescence (RF) in natural quartz with dose rates ranging from 10 to 500 mGy s−1 is analysed. RF emission spectra were recorded and deconvolved to extract information on the C band, which is often the main emission of quartz annealed at a temperature close to 500 °C. Our results confirmed theoretical findings, e.g., the direct proportionality of the initial RF signal of the C band with dose rate and the direct proportionality of the initial slope with the squared dose rate. Furthermore, numerical simulations employing a three-energy-level model and experimental data are in agreement. A first concept of using quartz UV-RF for dosimetric application is given based on the findings that different absorbed doses resulting from different dose rates match well into a single UV-RF decay curve.