TY - JOUR
T1 - On the separation of quartz OSL signal components using different stimulation modes
AU - Wallinga, Jakob
AU - Bos, Adrie J. J.
AU - Duller, Geoffrey Alastair Thomas
N1 - Wallinga, J. W., Boss, A. J. J., Duller, G. A. T. (2008). On the separation of quartz OSL signal components using different stimulation modes. Radiation Measurement, 43 (2-6), 742-747.
Sponsorship: Technology Foundation
PY - 2008/2/1
Y1 - 2008/2/1
N2 - We investigate both theoretically and experimentally the effect of stimulation mode on the separation of quartz optically stimulated luminescence (OSL) components. We find that, when assuming first-order kinetics with the detrapping probability proportional to stimulation intensity, the OSL signal is a function of the cumulative stimulation energy and not affected by the stimulation mode. This is confirmed by close correspondence between continuous wave (CW), linearly modulated (LM) and hyperbolically modulated (HM) OSL data for some of the samples studied. For other samples the data obtained using LM stimulation differ from that obtained using the other stimulation modes. This may be due to a contribution to the OSL signal from feldspars, or it may indicate that the behaviour of these samples is not adequately described by first-order kinetics. We suggest that CW stimulation is the method of choice for dating purposes as it allows the fastest readout with the greatest signal-to-noise ratio, and because it has a constant background. HM stimulation provides a good alternative when higher resolution is needed for the initial part of the shine-down curve.
AB - We investigate both theoretically and experimentally the effect of stimulation mode on the separation of quartz optically stimulated luminescence (OSL) components. We find that, when assuming first-order kinetics with the detrapping probability proportional to stimulation intensity, the OSL signal is a function of the cumulative stimulation energy and not affected by the stimulation mode. This is confirmed by close correspondence between continuous wave (CW), linearly modulated (LM) and hyperbolically modulated (HM) OSL data for some of the samples studied. For other samples the data obtained using LM stimulation differ from that obtained using the other stimulation modes. This may be due to a contribution to the OSL signal from feldspars, or it may indicate that the behaviour of these samples is not adequately described by first-order kinetics. We suggest that CW stimulation is the method of choice for dating purposes as it allows the fastest readout with the greatest signal-to-noise ratio, and because it has a constant background. HM stimulation provides a good alternative when higher resolution is needed for the initial part of the shine-down curve.
KW - LM-OSL
KW - DOSE MEASUREMENT
KW - LUMINESCENCE CHARACTERISTICS
KW - first-order kinetics
KW - OSL components
KW - RELEVANCE
KW - quartz
KW - stimulation mode
KW - First-order kinetics
KW - Quartz
KW - Stimulation mode
UR - http://www.scopus.com/inward/record.url?scp=46549088789&partnerID=8YFLogxK
U2 - 10.1016/j.radmeas.2008.01.013
DO - 10.1016/j.radmeas.2008.01.013
M3 - Article
SN - 1350-4487
VL - 43
SP - 742
EP - 747
JO - Radiation Measurements
JF - Radiation Measurements
IS - 2-6
T2 - 15th International Conference on Solid State Dosimetry
Y2 - 8 July 2007 through 13 July 2007
ER -