Luminescent emission spectrometer adapted to a TL/OSL reader for analysis of aluminum oxide detectors

Autor: Luiz Cláudio Meira-Belo, Daniel de Castro Pacheco, Helena Cristina de Matos Garcia
Rok vydání: 2021
Předmět:
Zdroj: Journal of Physics: Conference Series. 1826:012015
ISSN: 1742-6596
1742-6588
DOI: 10.1088/1742-6596/1826/1/012015
Popis: Thermoluminescent readings are widely used in radiation dosimetry to measure absorbed doses. The signal emitted by thermoluminescent detectors is due to defects in the crystal structure and their emission usually occurs in some specific wavelength ranges. The difficulty in studying the emission spectrum is that, in general, photomultiplier tubes do not discriminate wavelengths and therefore only provide intensity information. The objective of this work was to adapt a RISØ TL/OSL reader to operate as a luminescence emission spectrometer, allowing to select the wavelength to be analyzed before the acquisition of luminescent readings. A monochromator driven by a stepper motor connected to an Arduino module responsible for controlling wavelength adjustments during readings was used. The equipment added spectral resolution to the conventional reader, allowing the determination of the response surface as a function of temperature, wavelength and light emission intensity for the studied detectors.
Databáze: OpenAIRE
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