Simulations of the effect of pulse annealing on optically-stimulated luminescence of quartz

Pagonis, Vasilis; Wintle, A.G.; Chen, R.

doi:10.1016/j.radmeas.2007.09.003

Cited by 17 publications

(12 citation statements)

References 39 publications

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“…More specifically, it is possible during the preheat stage to thermally transfer holes from the Zimmerman hole reservoirs (levels 6 and 7) into the recombination center; this thermal transfer of holes leads to an increase of the concentration of holes in the recombination center m(T p ), and to corresponding increase of the OSL recombination probability A R ; this increased competition will reduce the number of electrons contributing to the OSE signal. This thermal transfer phenomenon has been documented widely both by experiments and by simulations (see for example, Pagonis et al [8] and references therein).…”

Section: Dependence Of the Ose Signal On The Preheat Temperaturementioning

confidence: 70%

“…1, the trapped electrons can be excited optically to the conduction band, and subsequently will be emitted from the surface via a thermally assisted process. In this case, the energy of the photon is such that n ohno n þ w, (8) and one obtains the following simplified expression for the OSE signal (Oster and Haddad, [4], their Eq. (9)):…”

Section: Photo-thermostimulated Emissionmentioning

confidence: 99%

“…Such a simulation was carried out recently by Pagonis et al [8], who showed that it is possible to simulate the changes in sensitivity S(T p ) by using the comprehensive quartz model of Bailey [7]. The simulated sensitivity S(T p ) was shown in Fig.…”

Section: Dependence Of the Ose Signal On The Preheat Temperaturementioning

confidence: 99%

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Optically stimulated exoelectron emission processes in quartz: comparison of experiment and theory

Pagonis

Ankjærgaard

Murray

et al. 2009

Journal of Luminescence

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Section: Dependence Of the Ose Signal On The Preheat Temperaturementioning

confidence: 70%

Section: Photo-thermostimulated Emissionmentioning

confidence: 99%

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Optically stimulated exoelectron emission processes in quartz: comparison of experiment and theory

Pagonis

Ankjærgaard

Murray

et al. 2009

Journal of Luminescence

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“…The model developed by Bailey (2001) consists of five electron traps and four hole centers and is able to reliably reproduce a wide variety of TL and OSL phenomena in quartz (Bailey, 2001;Pagonis et al, 2007aPagonis et al, , 2007bPagonis et al, , 2008. Levels 3 and 4 in this model (usually termed the fast and medium OSL components) yield TL peaks at approximately 330 o C and give rise also to OSL signals.…”

Section: Simulation Of Dose Recovery Experiments To Determine Sgc Andmentioning

confidence: 99%

On the intrinsic accuracy and precision of the standardised growth curve (SGC) and global-SGC (gSGC) methods for equivalent dose determination: A simulation study

Peng

Pagonis

Ли

2016

Radiation Measurements

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2016). On the intrinsic accuracy and precision of the standardised growth curve (SGC) and global-SGC (gSGC) methods for equivalent dose determination: A simulation study. Radiation Measurements, On the intrinsic accuracy and precision of the standardised growth curve (SGC) and global-SGC (gSGC) methods for equivalent dose determination: A simulation study AbstractIn optically stimulated luminescence (OSL) dating, the single aliquot regenerative-dose (SAR) method has been used extensively for determining equivalent doses (De) in quartz. A variation of the SAR method is the "standardised growth curve" (SGC) method, which has been used as an efficient procedure to save measurement time during dating studies. During the application of the SGC method one establishes the SGC and calculation of the De of an aliquot requires only measurement of the standardised natural dose signal. Recently, a "global standardised growth curve" (gSGC) method was developed as an improved version of the SGC procedure. During the application of the gSGC method, the growth curves are re-normalised using sensitivity-corrected signal corresponding to one of the regenerative doses. Subsequently the De of an aliquot is estimated using the sensitivity-corrected natural dose signal and an additional sensitivity-corrected regenerative dose signal as well as the established gSGC. In the present study, simulations are performed to assess the intrinsic accuracy and precision of the SGC and gSGC De estimates. The results of our simulations validate that the gSGC method is intrinsically more precise than the SGC method and is also more accurate for doses greater than 210 Gy. Several factors which affect the reliability of the two methods are investigated. AbstractIn optically stimulated luminescence (OSL) dating, the single aliquot regenerative-dose (SAR) method has been used extensively for determining equivalent doses (De) in quartz. A variation of the SAR method is the "standardised growth curve" (SGC) method, which has been used as an efficient procedure to save measurement time during dating studies. During the application of the SGC method one establishes the SGC and calculation of the De of an aliquot requires only measurement of the standardised natural dose signal. Recently, a "global standardised growth curve" (gSGC) method was developed as an improved version of the SGC procedure. During the application of the gSGC method, the growth curves are re-normalised using sensitivity-corrected signal corresponding to one of the regenerative doses. Subsequently the De of an aliquot is estimated using the sensitivity-corrected natural dose signal and an additional sensitivity-corrected regenerative dose signal as well as the established gSGC. In the present study, simulations are performed to assess the intrinsic accuracy and precision of the SGC and gSGC De estimates. The results of our simulations validate that the gSGC method is intrinsically more precise than the SGC method and is also more accurate for doses greater than 210 Gy. Several factors ...

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“…The model has been very effectively used in simulations involving various aspects of luminescence in quartz and has been found to reproduce most of the phenomenon observed in TL and OSL emissions of quartz (Pagonis et al, 2007). It comprises of five electron and four hole trapping centers.…”

Section: Simulation Proceduresmentioning

confidence: 99%

Influence of in Situ Temperature on the Sensitization of Quartz: A Simulation Study

Koul

Patil

2015

Geochronometria

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Abstract:The influence of ambient geological and burial temperatures, prevailing in nature, on the charge population of the defect centers and, eventually, the sensitivity of the luminescence emission of quartz was simulated using empirical model. Various permutation and combination of these temperatures were incorporated so as to observe, both, the collective and independent impact of these two temperatures on the charge kinetics. The results of seem to demonstrate the role of the ambient temperature in the sensitization of quartz mineral.

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Simulations of the effect of pulse annealing on optically-stimulated luminescence of quartz

Cited by 17 publications

References 39 publications

Optically stimulated exoelectron emission processes in quartz: comparison of experiment and theory

Optically stimulated exoelectron emission processes in quartz: comparison of experiment and theory

On the intrinsic accuracy and precision of the standardised growth curve (SGC) and global-SGC (gSGC) methods for equivalent dose determination: A simulation study

Influence of in Situ Temperature on the Sensitization of Quartz: A Simulation Study

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