Design and implementation of an open-source optically stimulated luminescence measurement system

Maraba, Diren
Optically Stimulated Luminescence (OSL) is the light emission from an irradiated solid (insulator or a wide band gap semiconductor) upon illumination with light of suitable wavelength. Although the phenomenon has been known for a long time, OSL has emerged as a practically applicable dosimetry technique in the past two decades. Recently introduced materials like alumina and beryllia have found use in the field of radiation dosimetry. The purpose of this study is to design and construct a simple multi-sample OSL measurement system. The device is realized using open-source hardware and software platforms which reduced the development costs to very low levels. The system is able to measure OSL from materials relevant for dosimetry and dating. The measurement system is based on the Arduino DUE microcontroller board. The control of the sample positioning mechanism, stimulation system, precise timing and photon counting is achieved using this board. The control software on the client computer is written in Python language which can be run on any platform. The stimulation system is based on high power light emitting diode (LED) in visible region of the electromagnetic spectrum and three commonly used stimulation modes, continuous wave (CW-), linearly modulated (LM-) and time-resolved (TR-) OSL modes are achievable. Luminescence emission is measured using a bialkali photomutiplier tube (PMT) module which works in photon counting mode and produces pulses as output. The pulses from the PMT module is counted using a fast timer counter of the microcontroller. The optical characteristics of system is measured and presented. In addition, the OSL measurement system is tested using materials such as Al2O3:C, BeO, Quartz, ZrSiO4, which are used for dosimetry and dating studies. 


Use of the LM-OSL technique for the detection of partial bleaching in quartz
Agersnap Larsen, N.; Bulur, Enver; Bøtter-Jensen, L.; McKeever, S.W.S. (2000-12-15)
We present a study of the sensitivity to light (ease-of-bleaching) of the trapped charge in sedimentary quartz grains using an optically stimulated luminescence (OSL) technique in which the intensity of the stimulation light is linearly increased during the measurement period. The technique is known as linear modulation OSL (LM-OSL). In controlled laboratory conditions, this technique has been employed to study the ease-of-bleaching of the trapped charge in quartz by comparing the OSL curves of quartz aliqu...
Design and implementation of a luminescence emission spectrometer
Togay, Evren; Bulur, Enver; Department of Physics (2012)
Luminescence is the emission of light resulting from radiative transition of an atom from an excited state to a ground state. This radiative transition yields emission of photons and the luminescence is the general name which is used to classify “cold emission” other than the blackbody radiation. Spectroscopy involves the measurement of intensity of emitted, absorbed or scattered electromagnetic radiation as a function of wavelength. Thus, it is a valuable tool in the study of understanding the luminescence...
Optically stimulated luminescence from quartz measured using the linear modulation technique
Bulur, Enver; Murray, A.S. (2000-12-15)
The optically stimulated luminescence (OSL) from heated natural quartz has been investigated using the linear modulation technique (LMT), in which the excitation light intensity is increased linearly during stimulation. In contrast to conventional stimulation, which usually produces a monotonically decreasing signal, linearly increasing the stimulation power gives peaks in the signal as a function of time. In cases where the OSL signal contains more than one component, the linear increase in power of the st...
Simple transformation for converting CW-OSL curves to LM-OSL curves
Bulur, Enver (2000-01-01)
A simple mathematical transformation is introduced to convert from OSL decay curves obtained in the conventional way to those obtained using a linear modulation technique based on a linear increase of the stimulation light intensity during OSL measurement. The validity of the transformation was tested by the IR-stimulated luminescence curves from feldspars, recorded using both the conventional and the linear modulation techniques. The transformation was further applied to green-light-stimulated OSL from K a...
Infrared (IR) stimulated luminescence from feldspars with linearly increasing excitation light intensity
Bulur, Enver (1999-01-01)
IR stimulated luminescence signal from potassium and sodium feldspars were studied by linearly increasing the excitation power from zero to a maximum value during the readout. The peak shaped signals observed in both feldspars could be approximated using a linear combination of three first-order components as deduced by curve fitting. The thermal and radiation dose dependent behavior of the IR-stimulated OSL curves were also studied. (C) 1999 Elsevier Science Ltd. All rights reserved.
Citation Formats
D. Maraba, “Design and implementation of an open-source optically stimulated luminescence measurement system,” M.S. - Master of Science, Middle East Technical University, 2017.