Open AccessLuminescent emission spectrometer adapted to a TL/OSL reader for analysis of aluminum oxide detectors
Author(s) -
Helena Cristina de Matos Garcia,
Daniel de Castro Pacheco,
Luiz C. Meira-Belo
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1826/1/012015
Subject(s) - photomultiplier , spectrometer , optically stimulated luminescence , optics , luminescence , monochromator , thermoluminescence , wavelength , detector , optoelectronics , thermoluminescent dosimetry , materials science , particle detector , dosimetry , radiation , physics , thermoluminescent dosimeter , dosimeter , nuclear medicine , medicine
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.