On the dose-rate dependence of the thermoluminescence response of quartz

Valladas, G.; Ferreira, João F.

doi:10.1016/0029-554x(80)90310-9

Cited by 32 publications

(12 citation statements)

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“…The most significant difference in irradiation conditions is the rate at which the dose is delivered, with a natural dose rate of about 3 Gy/ka and a laboratory dose rate of 0.157 Gy/s. Valladas and Ferriera (1980) found that by increasing their laboratory g-dose rate from 0.01 to 10 Gy/s, the TL response of their quartz could be increased by $10%. Such behaviour has been explained as being due to competition for electrons from relatively thermally unstable traps that are effectively kept empty during natural irradiation (Aitken, 1985).…”

Section: Using Pulsed Laboratory Irradiationmentioning

confidence: 99%

Recuperated OSL dating of fine-grained quartz in Chinese loess

Wang¹,

Lu²,

Wintle³

2006

Quaternary Geochronology

168

108

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Wintle, Ann, Wang, X.L., Lu, Y.C., (2006) 'Recuperated OSL dating of fine-grained quartz in Chinese loess', Quaternary Geochronology 1(2) pp.89-100 RAE2008The thermally transferred optically stimulated luminescence (OSL) signal from fine-grained quartz extracted from Chinese loess can be separated into two components, the recuperated and the basic transferred OSL signal. The recuperated OSL signal continues to grow with dose, beyond the dose region where the conventionally measured fast component of the OSL signal is close to saturation. A multiple-aliquot, two-part, regenerative-dose protocol, has been developed as a recuperated OSL dating method to extend the application of luminescence dating further back in time. Using the protocol the recuperated OSL signal is separated and used to estimate the equivalent dose for fine-grained quartz in Chinese loess. Ages obtained using equivalent doses determined by the recuperated OSL dating method for 12 samples from the last interglacial?glacial loess?palaeosol sequence are in agreement with multiple aliquot OSL ages and previous stratigraphic information. Ages obtained for four Chinese loess samples from close to the Brunhes/Matuyama (B/M) boundary were also consistent with the expected age of 776 ka. The recuperated OSL dating method, therefore, can go beyond the last interglacial and cover the total Brunhes epoch in Chinese loess.Peer reviewe

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Section: Using Pulsed Laboratory Irradiationmentioning

confidence: 99%

Recuperated OSL dating of fine-grained quartz in Chinese loess

Wang¹,

Lu²,

Wintle³

2006

Quaternary Geochronology

168

108

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“…Ages appear to be inaccurate even though the plateau test is satisfied or when apparent palaeodoses are independent of the spectral domain of measurements while quartz samples extracted from volcanic and sedimentary rocks are undoubtedly mineralogically identical, one may argue that they might exhibit different TL behaviour as they contain different trace element impurities, and as they were not formed in the same manner, they experienced different crystallisation rates and were not exposed to the same radiation and temperature fluctuations in the past. Dose-rate effects have been identified in very pure filonian quartz (Valladas and Ferreira, 1980) as well as in some other types of quartz (Chawla et al, 1998). This may be part of the explanation for the results reported here.…”

Section: Discussionmentioning

confidence: 44%

Aberrant thermoluminescence dates obtained from primary volcanic quartz

Guérin

Samper

2007

Radiation Measurements

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“…6 No such reports have been given of OSL results. It should be pointed out, however, that for such complex processes taking place during the excitation and optical stimulation, there is no reason a priori to assume that only the total dose is the determining factor.…”

Section: Dose-rate Dependence Of Oslmentioning

confidence: 93%

Dose dependence and dose-rate dependence of the optically stimulated luminescence signal

Chen

Leung

2001

Journal of Applied Physics

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The expected behavior of the dose dependence of the optically stimulated luminescence (OSL) signal has been studied using numerical simulation. A simple model of one trapping state and one kind of recombination center is presented, and the sequence of sets of simultaneous differential equations governing the processes during excitation, relaxation, and light exposure are numerically solved. With the choice of reasonable trapping and recombination parameters, it has been shown that a quadratic dose dependence of this effect results from the model when the irradiation stage starts with empty trapping states. This may explain reports in the literature of an initial supralinear dose dependence of OSL. It is also shown that within the same model, one can get an initial linear dose dependence of OSL if one starts with partly filled traps. Also has been studied the influence of dose rate on the measured OSL signal for a constant total dose, and some effect has been seen for a certain dose-rate range. The similarities and dissimilarities of OSL as compared to thermoluminescence with respect to these phenomena are discussed.

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On the dose-rate dependence of the thermoluminescence response of quartz

Cited by 32 publications

References 1 publication

Recuperated OSL dating of fine-grained quartz in Chinese loess

Recuperated OSL dating of fine-grained quartz in Chinese loess

Aberrant thermoluminescence dates obtained from primary volcanic quartz

Dose dependence and dose-rate dependence of the optically stimulated luminescence signal

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