LM-OSL from single grains of quartz: A preliminary study

Bulur, Enver
Bøtter-Jensen, L.
Murray, A.S.
The recently developed single grain attachment for the Riso TL-OSL reader has been modified to achieve linearly modulated optically stimulated luminescence (LM-OSL). Three different types of luminescence behaviour were observed in 81 quartz grains measured. These types are those showing only the easy-to-bleach component, those with only the hard-to-bleach component, and those exhibiting all components. The results of this preliminary study show that LM-OSL experiments carried out at the single grain level may give important insights into the luminescence properties observed when viewing samples consisting of multiple grains.
Radiation Measurements


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...
LM-OSL signals from some insulators: An analysis of the dependency of the detrapping probability on stimulation light intensity
Bulur, Enver; Murray, A.S. (2001-01-01)
Optically stimulated luminescence (OSL) signals from various insulators including quartz, Al2O3 : C, BeO and NaCl have been studied using the linear modulation OSL (LM-OSL) technique. LM-OSL is based on the linear increase of the stimulation light power from zero to a maximum during the measurement. The resultant OSL curve initially increases and then decays after reaching a maximum, The analysis of LM-OSL data usually assumes a linear relationship between the detrapping rate and the stimulation light inten...
Frequency modulated pulsed stimulation in optically stimulated luminescence
Bulur, Enver; Murray, A.S. (2001-01-01)
A new pulsed-OSL stimulation unit capable of producing stimulation pulses down to 4 us wide has been developed. A matrix of 49 light emitting diodes (LEDs) are pulsed using a voltage-to-frequency converter, which produces fixed width pulses of adjustable duty cycle in the frequency range 0-10 kHz. Since the average light power falling on a sample is proportional to the repetition rate of the pulses, we have used voltage control of the frequency to undertake linearly modulated optically stimulated luminescen...
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...
Design and construction of an automated OSL reader with open source software and hardware
MARABA, Diren; Bulur, Enver (2017-11-01)
An Optically Stimulated Luminescence (OSL) reader accompanying a sample changer unit for multi sample measurements was designed and constructed so that consecutive automated luminescence measurements can be performed. The reader was realized using open source software and hardware to minimize the development costs. The core control system of the reader is an open source single-board microcontroller (Arduino DUE). The control of sample positioning mechanism, stimulation system, precise timing and photon coun...
Citation Formats
E. Bulur, S. SOLONGO, L. Bøtter-Jensen, and A. S. Murray, “LM-OSL from single grains of quartz: A preliminary study,” Radiation Measurements, pp. 79–85, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33393.