Frequency modulated pulsed stimulation in optically stimulated luminescence

Authors
Bulur, E Botter-Jensen, L Murray, AS
Citation
E. Bulur et al., Frequency modulated pulsed stimulation in optically stimulated luminescence, NUCL INST B, 179(1), 2001, pp. 151-159
Citations number
11
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
ISSN journal
0168583X → ACNP
Volume
179
Issue
1
Year of publication
2001
Pages
151 - 159
Database
ISI
SICI code
0168-583X(200106)179:1<151:FMPSIO>2.0.ZU;2-B
Abstract
A new pulsed-OSL stimulation unit capable of producing stimulation pulses d own 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 fix ed width pulses of adjustable duty cycle in the frequency range 0-10 kHz. S ince the average light power falling on a sample is proportional to the rep etition rate of the pulses, we have used voltage control of the frequency t o undertake linearly modulated optically stimulated luminescence (LM-OSL) m easurements. The frequency modulated OSL signals from various phosphors rel evant to dating and retrospective dosimetry have been investigated using th e new unit. (C) 2001 Elsevier Science B.V. All rights reserved.